Fabric: 95% TENCEL™ Modal, 5% Elastane. Lace: 91% Nylon, 9% Elastane. B-Edit: 71% TENCEL™ Modal, 19% SeaCell™ and 10% Roica V550. As with all luxury fabrics, we recommend hand washing under warm water. If you choose to machine wash, please pop your boxers in a net bag on a cool 30 degree wash. No need to tumble dry. Dry flat. Please note with bright and neon dyes, there will be colour rub when new but with wash and wear the colour will fade subtly. To preserve the vibrancy we recommend hand washing bright colours in a cool wash.