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AeroFlex Bamboo Performance Boxers – Rosso Firenze (Cosimo Collection)

AeroFlex Bamboo Performance Boxers – Rosso Firenze (Cosimo Collection)

£16.99 GBP
£12.99 GBP £16.99 GBP
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Join 10,000+ athletes who've switched to superior performance.

🛡️ Medici Performance Guarantee

We stand behind our boxers — and we want you to feel confident trying them. If they don’t beat your old pair for training, comfort, or fit, we’ll give you a full refund.

No returns needed. No hoops to jump through. Just confidence, guaranteed.

🏋️‍♂️ Built for the Gym

At the highest level, getting 1% better can be the difference between winning and losing.
Training properly is essential — and so is having the right support.

If you train and sleep in traditional boxers, you’re already giving up that 1%.
They weren’t built for movement or recovery — that’s why they ride up, twist, and trap heat when it matters most.

The Cosimo Collection by Medici is built for performance.

We set out to design boxers that help athletes perform at their best — in the gym, on the field, or recovering in bed.
Every pair in the Cosimo Collection delivers next-level performance, comfort, and style — without compromise.

🛏️ Optimised for Sleep

Most men sleep in boxers — but almost none are made with sleep in mind. Standard cotton traps heat and bunches up, leading to sweat, discomfort, and broken sleep.

The Cosimo Collection by Medici is engineered for rest and recovery.

Made from breathable AeroFlex Bamboo and designed with anti-ride-up paneling, they keep you cool, dry, and distraction-free all night — helping your body rest and recover the way it should.


Fit & Fabric

The Cosimo Collection is made from 94% AeroFlex Bamboo Viscose and 6% Elastane. This equals an extremely soft and durable pair of underwear that wicks sweat brilliantly.

AeroFlex™ Bamboo – Breathable, moisture-wicking, and temperature-regulating.

AeroFlex™ Anti-Chafe Paneling– No ride-up. No irritation. Just smooth support where it matters.

Tailored Fit– Supportive but never restrictive. Feels custom-made.

Size Guide

Please refer to the size guide below and remember all orders are covered by the Medici Performance Guarantee 🛡️

Size Waist (inches)
S 28–30
M 30–32
L 32–34
XL

34–36

 

For those with athletic builds or larger quads, we suggest selecting the next size up to ensure a relaxed, non-restrictive fit.

Shipping

FREE shipping is available on all orders in the UK!

We aim to dispatch your order 1-2 business days after placing your order.

International shipping is calculated at checkout.

We use Royal Mail Tracked 48 to ensure you get your product as fast as possible!

Whether you're winding down after a long day, pushing through a workout, or heading out, the Cosimo Collection by Medici is built to perform.

Designed for athletes of all levels, every pair delivers elite comfort, breathable support, and a fit that moves with you — wherever the day (or night) takes you.

Sleep. Sport. Style. Medici.

🛡️

Medici Performance Guarantee

We’re so confident you’ll never want to train in regular boxers again.

If our boxers don’t outperform your old pair for training, comfort, and fit — we’ll refund your order, no questions asked.

🚚

Free UK Shipping

No hidden fees — every UK order ships free.

🔄

Easy Returns

Wrong size? Return unopened items within 30 days.

💬

24/7 Support

We’re always here to help with any questions.

4.8
Rated 4.8 out of 5 stars
Based on 114 reviews
Total 5 star reviews: 101 Total 4 star reviews: 11 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 2
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114 reviews
  • M
    Mark
    Verified Reviewer
    Reviewing
    The 'Cosimo' - Nero - Medici Original Collection
    Rated 5 out of 5 stars
    Great Boxers for Gym

    I’ve been wearing these to the gym and just daily life and can definitely say they are far more comfortable for training in than CK boxers. Don’t ride up nearly as much. Definitely recommend.

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  • DM
    David M.
    Verified Buyer
    Reviewing
    The 'Cosimo' - Nero - Medici Original Collection
    Rated 5 out of 5 stars
    Top Quality Underwear

    I recently bought a pack of 3 and was really impressed. I’d never tried this brand before, but the quality is outstanding. The fabric feels premium, they fit perfectly, and they look great too. Incredibly comfortable, and the delivery was super quick. I’ll definitely be ordering again.

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  • E
    Emma
    Verified Reviewer
    Reviewing
    The 'Cosimo' - Nero - Medici Original Collection
    Rated 5 out of 5 stars
    Great gift for your partner

    I bought the 3 pack for my partner after seeing the ad on Instagram. The boxers arrived quickly and my partner says they are now the most comfortable pair he owns. He’s worn them to the gym a few times and says they’re just as great for workouts as they are day-to-day. He is very pleased with the quality and would definitely recommend.

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