size? Active Deals, Sales & Codes in October, 2026

size? is a British streetwear and trainer retailer, part of the JD Sports Fashion plc group, that launched in 2000 with a focus on curated footwear and limited-run drops. The brand operates over 20 shops across the UK alongside stores in several European markets, with a full …

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deal Last Verified: 4 days ago

10% off First Orders with Newsletter Sign-ups at size?

deal Last Verified: 3 days ago

New Arrivals from £12 at size?

sale Last Verified: 2 days ago

Up to 45% off adidas in the size? Sale

sale Last Verified: 2 days ago

Up to 50% off Nike in the size? Sale

sale Last Verified: 3 days ago

Up to 50% off Converse in the size? Sale

sale Last Verified: Yesterday

Up to 55% off Vans in the size? Sale

sale Last Verified: 2 days ago

Up to 50% off Mens Footwear in the size? Sale

sale Last Verified: Yesterday

Up to 50% off Womens Footwear in the size? Sale

sale Last Verified: Yesterday

Up to 50% off Mens Clothing in the size? Sale

sale Last Verified: 4 days ago

Up to 50% off PUMA in the size? Sale

sale Last Verified: 3 days ago

Up to 50% off New Balance in the size? Sale

sale Last Verified: 3 days ago

Up to 50% off in the size? Sale

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About the Brand

size? is a British streetwear and trainer retailer, part of the JD Sports Fashion plc group, that launched in 2000 with a focus on curated footwear and limited-run drops. The brand operates over 20 shops across the UK alongside stores in several European markets, with a full e-commerce platform at www.size.co.uk. It sits firmly in the premium-athleisure space, positioning itself between high-street sportswear chains and boutique sneaker stores.

The product range spans men’s and women’s footwear, clothing, and accessories from major brands including adidas, Nike, Puma, Converse, New Balance, The North Face, Vans, Fred Perry, Reebok, Dr Martens, Clarks, and Fila. Own-label collections sit alongside these names. Clothing covers jackets, knitwear, jeans, and shorts, while accessories include bags, headwear, and socks. Prices vary — new arrivals start from as little as £12, though premium releases and collaborations command considerably more.

Several features help stretch your budget further. The size? app and its companion Launches app unlock early sale access, birthday rewards, and enhanced prize-draw entries. Students verify through UNiDAYS for 15% off full-price orders. Klarna’s Pay Later option lets you delay payment for up to 30 days at no extra cost, and Click & Collect is available at over 650 UK locations for just £1.

With sale discounts reaching up to 55% off brands like Vans and Nike, plus regular newsletter and seasonal offers, the deals below are well worth bookmarking for your next purchase.

Page last updated: 29 September 2026

How to use

The current offers on this page are mostly automatic — sale reductions and deals that apply without a code. That said, size? does release promo codes from time to time, and when one’s available you’ll find it listed here. To use a code, click the offer card to copy it, head to www.size.co.uk, paste the code into the promo box at checkout, and click ‘Redeem’ to see your discount applied.
The bulk of size?’s current savings come through sale reductions and automatic deals. Browse the sale sections for up to 55% off leading brands — including adidas, Nike, Vans, Converse, PUMA, and New Balance — across men’s and women’s footwear and clothing. New arrivals also start from as little as £12. No code is needed; the reduced price displays on the product page and carries through to your basket automatically.
Signing up to the size? newsletter earns you 10% off your first order. You’ll find the sign-up prompt on the homepage — enter your email and the discount is typically sent straight to your inbox. It’s one of the simplest ways to cut the cost of an initial purchase, and it pairs neatly with sale prices on already-reduced items.
Students can unlock 15% off full-price orders by verifying through UNiDAYS on the size? website. You’ll need a valid student ID or institutional email to complete the process. Once verified, the discount applies to eligible items at checkout. Certain premium releases and collaboration items may be excluded, so check the terms before relying on it for a specific product.
If any offer on this page doesn’t work as expected — a code fails to apply, or a deal doesn’t match its description — use the report button on the relevant offer card to flag it. We review submissions regularly and update or remove expired or inaccurate offers, so your feedback helps keep this page reliable for everyone.

Shopping Guide

When’s the best time to shop at size?

size? runs sales for most of the year, but the deepest discounts cluster around Black Friday, Boxing Day, and end-of-season clearances, with 20–45% off footwear and clothing. December is historically the peak savings month, combining festive sales with the highest number of active promo codes. Brand-specific sale sections are worth checking individually — Vans has reached up to 55% off, while Nike and New Balance regularly hit 50%.

Can I combine discounts at size?

Stacking is possible, but with caveats. The newsletter sign-up gives 10% off your first order; the student discount via UNiDAYS offers 15% off full-price items. These two won’t combine with each other, but a student discount might work on already-reduced sale prices — worth testing at checkout. App members get early sale access, which means you can grab reduced stock before it’s picked over. Activate your student verification first, then shop during a sale window.

Is the size? app worth downloading?

Both free apps are worth having if you shop here with any regularity. The main size? app provides early sale access, birthday rewards, and VIP membership perks including anniversary treats. The size? Launches app takes a different angle, focusing on prize draws with extra entries and achievement tokens that boost your winning chances. Between the two, you’re getting more engagement perks than most trainer retailers offer.

What should I watch out for with size? codes?

Read the terms before committing to a code. Some require a minimum spend; others are restricted to specific brands or product categories. The student discount doesn’t cover every item — premium releases and collaboration exclusions are common. First-order codes won’t work on repeat purchases, so use them on a larger basket to maximise the saving. And always check the expiry date: size? codes tend to have short validity windows.

size? FAQ