Theory Women's Sale

Theory's cashmere is genuinely good and the rest of the line is well-constructed for the price point — secondhand, it becomes a very reasonable proposition. The cashmere sweaters, blazers and trousers travel and store well, the fabric tag tells you most of what a piece is worth, and the minimalist aesthetic means pieces from several seasons ago don't look dated.

Shop 59 Theory deals in our collection. Priced an average of 80% off estimated retail.

Showing

Theory Women XL Beige Sleek Trench Car Coat Button Front Lightweight 2024

100.0% · 182 ratings Free shipping Listed 10d ago

Theory's trench sits where contemporary outerwear meets office-dressing practicality -- a cut that resists trend cycles without ever announcing itself.

10.0 /10

Theory $130 $395–$595$595(74% Off Est. Retail74% Off Est Retail)

THEORY Clairene Womens Medium New Divide Wool Cashmere Open Front Coat Black

99.3% · 627 ratings Free shipping Listed 29d ago

A wool-cashmere open coat from Theory, listed where the brand's resale following is smaller than its retail footprint.

10.0 /10

Theory $200 $595–$795$795(71% Off Est. Retail71% Off Est Retail)

Theory Naomo Coat | Wool Cashmere & Leather Sleeves | Black | M

100.0% · 78 ratings Free shipping Listed 28d ago

A Theory coat with leather sleeves -- the kind of mixed-material construction that usually commands more attention than wool alone.

10.0 /10

Theory $164 $545(70% Off Est. Retail70% Off Est Retail)

Theory Coat Red Open Long Sleeve Wool/Cashmere notch Collar Size M

99.9% · 5,738 ratings Free shipping Listed 1 month ago

A wool-cashmere overcoat from a label that built its following on precise tailoring, sitting where Theory pieces usually start used.

10.0 /10

Theory $175 $595–$895$895(77% Off Est. Retail77% Off Est Retail)

Theory Women's Blue Wool/Cashmere Overcoat Pockets Size M

100.0% · 737 ratings Free shipping Listed 1 month ago

A wool-cashmere overcoat from a brand that dresses offices more than runways, priced where used pieces usually begin.

10.0 /10

Theory $230 $895–$1,295$1,295(79% Off Est. Retail79% Off Est Retail)

Theory Robe Coat Medium Gray Black Houndstooth Plaid Wool Blend Belted

100.0% · 9,446 ratings Free shipping Listed 1 month ago

Theory's wool-blend robe coat in houndstooth -- a brand whose resale following stays smaller than its retail footprint.

10.0 /10

Theory $224 $595–$895$895(70% Off Est. Retail70% Off Est Retail)

Theory Women's Wool Coat - Small

+$18 shipping Listed 21 months ago

Theory's wool outerwear is the quiet standard for Manhattan tailoring—this one's been waiting, likely because buyers who know the brand can afford to wait for excellent shape.

10.0 /10

Theory $165 $595(72% Off Est. Retail72% Off Est Retail)

$698 Theory Black Wool Coralia Dress Coat Medium - Worn 2x. Downsizing Closet!!

100.0% · 2,395 ratings +$20 shipping Listed 33 months ago

Theory's Coralia coat runs slim through the shoulders—size up if you plan to layer over a blazer.

10.0 /10

Theory $150 $695–$795$795(80% Off Est. Retail80% Off Est Retail)

Theory Black Trench Coat Rain Coat Excellent Used Size S

100.0% · 536 ratings +$18 shipping Listed 46 months ago

Theory's wool-blend trench in the slim-shouldered cut that doesn't appear often enough to establish a pattern, sitting for years where demand seems softer than the brand's reputation for understated workwear would suggest.

10.0 /10

Theory $149 $395–$525$525(68% Off Est. Retail68% Off Est Retail)

Theory Coat Size Small Cropped Puffer Purple

100.0% · 212 ratings Free shipping Listed 41 months ago

Theory's cropped puffer in saturated purple—years of visibility in a category where most outerwear moves faster suggests this particular cut and colorway never found its match.

10.0 /10

Theory $136 $595(77% Off Est. Retail77% Off Est Retail)

Theory Reversible Grey and Black Open-Front Wool/Cashmere Blend Coat Sz S

100.0% · 7,706 ratings +$15 shipping Listed 1 month ago

Reversible wool-cashmere construction in a brand more often seen for suiting than outerwear.

8.0 /10

Theory $84 $595–$795$795(88% Off Est. Retail88% Off Est Retail)

Theory Wool-Cashmere Stand Collar Coat Size M

100.0% · 47 ratings Free shipping Listed today

Theory's wool-cashmere blend with a stand collar -- a cut that reads outerwear but layers like tailoring, and the fabric ratio is the part most sellers never disclose.

7.0 /10

Theory $100 $795–$1,095$1,095(89% Off Est. Retail89% Off Est Retail)

Theory Good Linen Rolled Sleeve Blazer in Beige - Size 10 (Style N0203108)

100.0% · 8 ratings Free shipping Listed yesterday

Theory's Good Linen blazer, the piece that built the brand's office-to-anywhere reputation in the early aughts, priced where cotton basics usually sit.

7.0 /10

Theory $65 $395–$495$495(85% Off Est. Retail85% Off Est Retail)

Theory Trecca Long Linen-Blend Relaxed Blazer Sz 4 - Olive Green

100.0% · 51 ratings Free shipping Listed 4d ago

Theory's Trecca cut in olive linen-blend -- a longer, relaxed silhouette that moves against the brand's sharper office reputation.

7.0 /10

Theory $65 $395–$495$495(85% Off Est. Retail85% Off Est Retail)

Theory Parmenia Mandatory Navy Blazer 4 Pocket Size 6 EUC

100.0% · 3,505 ratings Free shipping Listed 7d ago

Theory's Parmenia cut with four-pocket construction, a detail that narrows the field for buyers who want utility without bulk.

7.0 /10

Theory $65 $395–$495$495(85% Off Est. Retail85% Off Est Retail)

Theory Womens Brince BR Cailen Tweed Blazer Jacket Cream White Size 6 EUC

100.0% · 2,558 ratings Free shipping Listed 8d ago

Theory's Brince tweed blazer sits in a crowded field of office-to-evening jackets where the brand's own deep resale supply competes against itself.

7.0 /10

Theory $74 $395–$495$495(83% Off Est. Retail83% Off Est Retail)

Womens Theory Fluid Shawl Blazer Rosina Crepe SZ 6 Open-Front Satin Collar

98.6% · 153 ratings Free shipping Listed 14d ago

Theory's Rosina crepe -- the fabric that made the label's name in midtown offices -- cut here in the shawl-collar blazer that defined its early aughts silhouette.

7.0 /10

Theory $65 $395–$495$495(85% Off Est. Retail85% Off Est Retail)

Theory Felicitina Bonded Double Crepe Dress Size 2 Black Fit And Flare

100.0% · 52 ratings +$11 shipping Listed 15d ago

Theory's bonded double crepe holds a shape most jersey can't manage, yet the Felicitina name rarely travels beyond office-wardrobe veterans.

7.0 /10

Theory $60 $375–$445$445(85% Off Est. Retail85% Off Est Retail)

Theory Womens Mint Green Eco Crunch Linen Double Breasted Boy Blazer Size 2

99.8% · 662 ratings +$9 shipping Listed 19d ago

Theory's Eco Crunch wash -- the rumpled linen finish that defined downtown tailoring in the late aughts -- here in the double-breasted boy cut that built the brand's following.

7.0 /10

Theory $75 $395–$495$495(83% Off Est. Retail83% Off Est Retail)

Theory 10 Relaxed Stretch Tweed Blazer Navy Cream Cotton Wool Blend Open Front

100.0% · 1,317 ratings Free shipping Listed 19d ago

Theory's relaxed tweed cut, open-front and unstructured, sits outside the brand's sharper office-core reputation.

7.0 /10

Theory $65 $395–$495$495(85% Off Est. Retail85% Off Est Retail)

Theory Gray Sleeveless Sheath Dress Geometric Knee Length Size 10

100.0% · 14 ratings Free shipping Listed 5 months ago

Theory's stretch-wool sheath—the cut that built the brand's reputation on boardroom tailoring—here with a couple weeks of seller patience already behind it.

7.0 /10

Theory $45 $295–$345$345(86% Off Est. Retail86% Off Est Retail)

Theory Leopard Print Silk Georgette Asymmetrical Maxi Slip Dress Sz 2 Fairygrung

99.8% · 3,129 ratings Free shipping Listed 10 months ago

Theory's bias-cut slips run long—this asymmetrical hem will skim the ankle on anyone under 5'6", and the leopard silk georgette is a niche the brand executed precisely but few shoppers search for.

7.0 /10

Theory $70 $395–$445$445(83% Off Est. Retail83% Off Est Retail)

Theory Deep Green Women's Size S WINTER COAT with Removable Hood.

100.0% · 240 ratings +$15 shipping Listed 10 months ago

Theory's removable-hood coats in this condition usually move faster—four months on the rack in a category this size suggests the right buyer simply hasn't looked yet.

7.0 /10

Theory $100 $495–$595$595(82% Off Est. Retail82% Off Est Retail)

Theory Wool City Single Button Blazer Jacker Size 4

100.0% · 335 ratings +$9 shipping Listed 8 months ago

Theory's City blazer—the cut that made the brand the reference point for modern workwear—here where two months without a sale has pulled the ask below where these wool staples usually change hands.

7.0 /10

Theory $60 $395–$425$425(85% Off Est. Retail85% Off Est Retail)

No deals match your filters.

Try broadening your search, or run a new search to surface more picks.

Buying Secondhand Theory Women's: What to Look For

Theory is one of the more sensible secondhand buys in the contemporary market, mostly because the brand names its fabrics and those names appear on the interior label. Once you know what Admiral crepe, Approach, and Bistretch mean, you can filter out the unremarkable pieces and find the ones that justify the original price. The secondary market tends to treat all Theory the same, which is the buyer's advantage.

Theory Approach and Bistretch Pants: Are They Worth Buying Used?

The Approach pant and the Bistretch Slim are the items most worth finding at secondhand prices. Both fabrics hold their structure well and resist wrinkling in a way that cheaper poly-wool blends don't, which is why they've been near-constant in Theory's line for years. The main thing to check on used pairs is sheen at the seat and inner thigh — the bi-stretch fabrics can develop a worn shine with heavy use that's visible in good light. Ask sellers to photograph under direct light if the listing photos are soft. Inseam availability is the other practical reason to buy secondhand: Theory runs specific inseams that sell out fast at retail, and the secondary market often has better selection.

Theory Admiral Crepe Blazers: Fabric Name Is Everything

Theory's blazers vary more than the pants do, and the fabric name is what separates a good buy from a forgettable one. Admiral crepe is their best suiting fabric — a dense, matte material that doesn't wrinkle badly, reads more expensive than the price suggests, and has been used consistently enough that you'll find it across multiple seasons. Listings rarely call it out, so it's worth checking the interior label before buying or messaging the seller to ask. On sizing: Theory shifted their blazer fit noticeably around 2018, moving toward a slightly shorter, more cropped silhouette. Pre-2018 pieces tend to have a longer body and slightly more relaxed shoulder.

Theory Knits and Regal Wool: What to Avoid and What to Look For

Theory's knit program is inconsistent in a way the pants and blazers aren't. Their cashmere and Regal Wool pieces are worth buying — the Regal Wool label in particular signals a denser, more pill-resistant blend than their entry-level options. The cheaper merino and cotton blends pill fast and often show it clearly in listing photos if you zoom in. For any knit, look closely at the cuffs, collar edges, and underarm area in photos. Pilling in those spots is normal and can be addressed with a fabric shaver; pilling across the body of the garment is harder to justify. Turtlenecks and fitted crewnecks in the better wool blends have held up well secondhand and are consistently underpriced relative to what they cost new.

Secondhand Theory Questions

Does Theory run small or large?

It depends on the era and category. Post-2018 Theory blazers run slightly shorter and more cropped than older pieces, but the numerical sizing has stayed fairly consistent. In pants, Theory tends to run true to size in the waist but short in the inseam for taller buyers — a common complaint is that even the 'long' inseam (around 32 inches) isn't long enough. If you're between sizes in a blazer, the current-era fit skews toward a snugger shoulder, so sizing up is reasonable.

How do I know if a Theory piece is worth the secondhand price?

Check the interior label for the fabric name. Admiral crepe, Approach, Bistretch, and Regal Wool are the fabrics worth buying. If the label says something generic like 'stretch wool' or lists a high percentage of polyester without a branded fabric name, the piece is from the lower tier of the line and the secondhand price should reflect that. Theory pieces in the better fabrics at $60-120 used are good value; the same price for a basic stretch blend is not.

What condition issues are most common on used Theory clothing?

Pilling on knits is the most common issue, especially on the cheaper wool and cotton blends. On pants and blazers, watch for sheen at high-wear points (seat, inner thigh, elbows) — this is harder to fix than pilling. Lining tears at the sleeve hem are fairly common on blazers and are a minor repair if the outer fabric is sound. Fabric content misrepresentation in listings is common enough that confirming the label is worth doing.

Is Theory a better secondhand buy than Vince or Rag & Bone?

For structured pieces like blazers and tailored pants, Theory is the stronger buy. Their house fabrics (particularly Admiral crepe and Approach) are more purpose-built for workwear than Vince's softer, more casual fabrications. Vince is better for knitwear and relaxed trousers. Rag & Bone is closer competition on blazers and has stronger denim, but Theory's pants in Bistretch or Precision fabric are hard to match at the secondhand price point.

Where can I buy pre-owned Theory womenswear?

Right here — this page collects pre-owned and secondhand Theory womenswear from live eBay listings, scored against current market pricing so the resale deals worth acting on sort to the top. Stock turns over daily as pieces sell.

Theory Women's Sale

No deals match your filters.

Buying Secondhand Theory Women's: What to Look For

Theory Approach and Bistretch Pants: Are They Worth Buying Used?

Theory Admiral Crepe Blazers: Fabric Name Is Everything

Theory Knits and Regal Wool: What to Avoid and What to Look For

Secondhand Theory Questions

Related Brands

Shop Theory by Category