It starts with the fabric
Undiesmith began with one idea: the underwear you wear every day should be the best thing you put on. So we started with the fabric and worked out from there. Ours is superfine bamboo viscose, chosen because nothing else feels quite like it against the skin.
Softer, cooler, more breathable
Bamboo viscose is softer than ordinary cotton, and it breathes and moves moisture away instead of holding onto it. That means a pair that stays cool on a hot day, keeps its shape and support through it, and still feels good at the end of it.
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Try Them Risk-Free
If your first pair isn’t the most comfortable underwear you’ve worn, we’ll give you a full refund.
Free Shipping. Always.
No minimum spend, no surprises at checkout. Every order ships free.
Next-Level Softness
Made from ultra-fine bamboo viscose that’s softer, cooler and more breathable than ordinary cotton.
Real Humans, Ready to Help
Questions? Our support team is here to help whenever you need it.