Kirkland Signature Men's Supima Cotton Boxer Brief 4-Pack offers four pairs of premium black boxer briefs crafted from 96% Supima cotton and 4% spandex. Supima cotton is an American-grown, extra-long staple fiber known for exceptional softness, durability, and color retention — noticeably superior to standard cotton.

Each pair features an updated comfort fit design with a premium waistband that stays in place without digging in. The stretch fabric moves naturally with your body throughout the day. The tagless construction eliminates label irritation, and the 6½-inch inseam provides full coverage and support. The fabric weight is 190 GSM, offering a substantial yet breathable feel. Big & tall sizing is also available.

Available in sizes Small through 3XL: S (28–30"), M (32–34"), L (36–38"), XL (40–42"), XXL (44–46"), 3XL (48–50"). Made in India. Care instructions: machine wash warm with like colors, non-chlorine bleach only when needed, tumble dry low, cool iron if needed — do not use fabric softener.