First Pair Free with On That Ass Subscription
Snag your first pair free with an On That Ass subscription. Use this On That Ass offer to start your boxer journey. Click the button and follow the instructions on the landing page.
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Monthly Subscription Boxers and Micro-Modal Underwear
Snag your first pair free with an On That Ass subscription. Use this On That Ass offer to start your boxer journey. Click the button and follow the instructions on the landing page.
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Founded in ‘s-Hertogenbosch, Netherlands in 2015 by e-commerce entrepreneur Raymond Vermeulen, ON THAT ASS is Europe’s leading monthly underwear subscription service, delivering premium designer boxer shorts and socks to more than 3 million active members across the United Kingdom, Germany, France, and the Netherlands. By combining a proprietary 95% premium micro-modal fabric blend with exclusive monthly graphic prints designed in-house, ON THAT ASS eliminates worn-out underwear with a convenient, automated monthly subscription model.
Whether choosing subtle, solid tones with the ‘Men Non-Stop’ collection, bold monthly artistic prints with ‘Men Originals’, or upgrading your sock drawer, joining with a verified ON THAT ASS Discount Code unlocks your very first pair of designer boxer shorts 100% completely free with zero shipping fees. Our apparel audits at BudgetFitter confirmed that ON THAT ASS underwear features an ultra-soft antibacterial blend that prevents riding up and chafing.
ON THAT ASS delivers high-performance underwear comfort designed for everyday durability:
Compare fabric softness, waistband durability, and price value of ON THAT ASS against retail multipacks:
| Underwear Brand | Fabric Blend & Softness Rating | First Pair Trial & Delivery Model | Key Member Advantage |
|---|---|---|---|
| ON THAT ASS Subscription | 95% Premium Micro-Modal (Ultra-Soft) | 100% Free First Pair (£0 Shipping) | Free trial pair, automatic letterbox delivery & exclusive monthly graphic art |
| Designer High-Street Brands (Calvin Klein) | Standard 100% Cotton / Elastane | Expensive (£25.00 – £35.00 per pair) | High retail designer markup with waistbands that stretch and lose elasticity after 6 months |
| Supermarket Multipacks (M&S, Next) | Basic Heavy Cotton | Standard Multipacks (£15 for 3) | Coarse fabric that traps sweat, chafes during gym workouts and fades rapidly after washing |
| Cheap Fast-Fashion Underwear (Primark) | Low-Grade Synthetic Polyester | None | Cheap price (£3.00) but suffocates skin, retains bacterial odours and features abrasive seams |
Get the maximum value from your underwear subscription with these practical guidelines from BudgetFitter:
Subscribers use these techniques to optimize their underwear wardrobe:
Claim your free designer boxer shorts in four simple steps:
Discover more verified fashion discounts in our Lifestyle & Sourcing category, or compare offerings from verified peer brands including Joybuy, AliExpress, and read our comprehensive ON THAT ASS Review.
Clear answers on ON THAT ASS voucher codes, checkout terms, and verified savings.
To claim your free trial pair, visit onthatass.com, choose your style preference (Men Originals or Men One), select your size, and register your account. Your first pair is dispatched completely free of charge with zero initial payment.
Your free trial pair arrives within 3 to 7 working days. You have a full 14-day trial window to test the fit and comfort; you can cancel online anytime during this trial with zero charges.
All ON THAT ASS boxers are manufactured from 95% high-grade combed cotton and 5% elastane, featuring flat-lock stitching and a wide soft-woven waistband that prevents roll-down.
Yes. Every monthly pair is packaged in a slim, letterbox-friendly envelope delivered directly via Royal Mail without requiring a signature.
Yes. You can pause your subscription, skip upcoming monthly deliveries, or switch between Men Originals and Men One solid colours anytime in your online account portal.
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