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Medici - Cosimo Collection Bamboo Performance Boxers - Sienna Verde

Medici - Cosimo Collection Bamboo Performance Boxers - Sienna Verde

£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 116 reviews
Total 5 star reviews: 102 Total 4 star reviews: 12 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 2
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116 reviews
  • M
    Mark
    Verified Reviewer
    Reviewing
    Medici - Cosimo Collection Bamboo Performance Boxers - Nero
    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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  • J
    Jase
    Verified Buyer
    Reviewing
    Medici - Cosimo Collection Bamboo Performance Boxers - Nero
    Rated 4 out of 5 stars
    Good quality and comfortable!

    Really good quality fabric to keep you feeling snug and comfortable. Clearly well made with a simple but understated design, great quality and seams, and supports the ample goods.

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  • RM
    Rebecca M.
    Verified Buyer
    Reviewing
    Medici - Cosimo Collection Bamboo Performance Boxers - Nero
    Rated 5 out of 5 stars
    5 stars!!

    I purchased these as a gift for my partner, and he is so impressed by the amazing quality. This is actually my second time buying them, as my he loved them so much, he wanted more. The texture and finish are really great, super soft. I highly recommend these - my partner finds them extremely comfortable and love the fact that they stay in place all day and night, even while sleeping! 5 stars!

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