Knix Leakproof UltraThin No-Show Boybrief underwear in Warm Sand. Designed with Knix leakproof technology to provide discreet protection while feeling like regular underwear. UltraThin design creates a smooth no-show fit under clothing. Perfect for everyday wear, light bladder leaks, periods, or backup protection. Details • Brand: Knix • Style: Leakproof UltraThin No Show Boybrief • Size: Small (S/P) • Color: Warm Sand • Absorbency: Moderate • Condition: New in original package Machine washable.