Materials & Care
Thoughtful Materials & Product Care
Tweak underwear is built for movement and everyday comfort. Here is an honest look at what our pieces are made from and how to care for them so they last.
Bamboo-Lined Gusset
Our gusset features a soft bamboo-derived lining, chosen for a gentle feel against the skin. Tweak pieces are performance underwear with a bamboo-derived lining, not a full bamboo garment.
Performance Fabrics
The main body uses a seamless performance blend designed to stretch, move with you and stay comfortably in place under activewear.
Designed for Repeat Wear
Tweak is made to be worn, washed and worn again. Machine wash cold on a gentle cycle and air dry to help your pieces keep their shape and stretch.
Our Next Steps
We are working with our manufacturer to confirm exact fibre content and improve the materials information we share. We would rather tell you what we can stand behind than overstate it.
Material details are provided in good faith and will be updated as we confirm full fibre content with our manufacturer.