Each pair uses 95% viscose (made from bamboo) / 5% spandex for ultra-soft handfeel, breathability, and durable stretch. We add targeted mesh at the legs for airflow, smooth seams for comfort, and a roll-free waistband that doesn’t itch. Bamboos is designed in the USA and made with care in China by trusted manufacturing partners who meet our quality and responsibility standards. Orders are packed and shipped from Amsterdam with tracked worldwide delivery.