· Triple-layer S-ripple corrugated walls provide excellent heat insulation for comfortable handling without sleeves. · Thickened materials and food-grade polyethylene lining ensure leakproof performance for over 48 hours. · Effortless separation: simply tap the stack on both sides and gently rotate to separate cups easily. · Versatile use at home, office, parties, cafes, or events; suitable for hot and cold beverages. · Eco-friendly alternative to plastic cups; black color available in multiple options.