Durable 3-Layer Design: This picnic mat features a thickened three-layer structure with skin-friendly polyester fiber on top, a soft middle pad, and waterproof Oxford cloth bottom. Four weight pockets can be filled with sand or stone for windproof stability and added sitting comfort. Waterproof and Sandproof and Anti-stain: The waterproof bottom keeps you dry and sand-free, protecting against wet ground, soil, and dirty campsites. Easy to clean by shaking or wiping off dirt, mud, and sand. Oversized for 4-6 Adults: Extra Large 60""x80"" size comfortably accommodates 4-6 adults with spacious room for family gatherings and safe play areas for children and pets. Easy to Carry: Soft workmanship allows quiet, easy rolling that stays secure without taking much space. Fits easily in backpacks for portable convenience. Multi Purpose: Suitable for parks, beaches, camping, travel, and parties. Also works as indoor game mat for children and pets, crawling blanket, or emergency blanket. weight: 1.74 pounds.