Waterproof lycra material keep your dog's paws dry and clean even if on a wet ground, inner fleece lining also can keep your dog's feet comfortable and warm in cold weather. The soft anti-slip rubber sole improves your dog's traction on slippery surfaces(tile/hardwood floor); and the reflective straps provide better visibility, make your dog safe at night. The hook and loop can keep the socks on the dog's feet and anti-slid off. Needn't worry about the shoes will fall off when they are running and playing outside or inside. Great for all Weather Conditions, Indoor and Outdoor Activities including Walking, Running, Hiking, Hunting, and other Moderate Performances. Great for rainly days. Please measure your pet's paw and refer to our size chart to choose the suitable size. They should be tight enough to stay up, but loose enough to pull on easily. If your dog is in-between sizes, select the larger size for better fit.