ISA Underpants long offer exceptional warmth and comfort with intelligent temperature regulation. Crafted from Swiss-knitted fabric finished to rigorous ecological standards, these underpants combine sustainability with performance. Sewn entirely in Portugal using 100% solar energy, they represent a commitment to environmental responsibility without compromise. Featuring reinforced cuffs at the leg end and an applied waistband for secure, comfortable fit, these underpants deliver reliable insulation and support throughout the day. A significant portion of production takes place in Switzerland, ensuring quality craftsmanship at every stage. Perfect for those seeking premium basics that align with eco-conscious values.

100% Wool