Rubber sole CLASSIC ELEGANT DESIGN: Easily foldable and portable due to its extremely lightweight, Slip-on style with an open-toe design helps your tired feet breathe. Just spread your tootsies out naturally in the warmer months! SUPER COMFORT: These house slippers have a memory foam cushion that will keep your feet cozy. The flexible, and high-density memory foam insole reduces your fatigue. WELL MADE TPR SILENT SOLES: No more slipping & sliding! The soft TPR soles ensures you safe, secure footing on any indoor surface. The material is safe and does no harm to any floor surfaces including wood, tile, and vinyl. INDOOR & OUTDOOR: The anti-slip and sturdy enough TPR outsole ensures both indoor and outdoor uses. Perfect for both at home after a nice bath or outside for quick errands. Ideal for all seasons, especially for spring, summer and autumn. 100%Cotton:Fabriconfootbedandupperismadebypurecotton,themostcomfortableandbreathablematerial,butnotdurableenough.WeguaranteeFULLMONEYBACKorREPLACEMENTforanyqualityissuein90DAYS,pleasecontactusandwewillbehappytoassistyou.