Superior Warmth & Comfort: Fleece-lined interior + 100% polyester construction provides double-layer warmth, keeping you cozy in freezing temperatures while feeling soft against skin.Perfect Stretch Fit: Excellent elasticity adapts to most adult head sizes, offering a snug, pressure-free fit that stays in place without slipping or feeling tight.Excellent Stretchability: The elastic knit material ensures a snug yet comfortable fit for most head sizes, without feeling tight or restrictive.Multi-Scene Versatility: Ideal for both indoor use (lounging at home, working from home) and outdoor activities (hiking, running, shopping, commuting, camping).One Size Fit Most. The beanie hat with four-way stretch to fit most head sizes, both men and women.The high elasticityfabric makes it not easy to slip off and not too tight to make you feel uncomfortable.