DETAILS -Soft natural fabric on the outside and inside - perfect for sensitive pups with nylon allergies or chafing -Nylon webbing core for strength and durability -Reinforced box stitches at all stress points Please note: we do not recommend salt water exposure for our collar hardware. MATERIALS AND CARE -100% cotton flannel fabric exterior, nylon webbing interior -Hardware: gold zinc alloy with a solid brass D-ring -Hang wash or machine wash on delicate cycle inside a bag or pillowcase to protect the hardware. Air dry flat.