Want super-light gear that's still burly as heck? Say 'hey' to our Ultralight Collection! Constructed with strong, ultralight nylon webbing for a featherweight feel and big rope strength. Product Details All sizes: 1" wide Made from tightly woven, light-weight nylon webbing Heavy-duty plastic clip with steel D-Ring Backed by our lifetime warranty SIZING Small = 11" - 15" around, 1" wide Medium = 13" - 18"  around, 1" wide Large = 17" - 24"  around, 1" wide Please measure your dogs before ordering. To find the most accurate size, measure around your dog's neck where the collar would sit. Make sure to leave room to slide at least two fingers comfortably under the collar! If your pup is between sizes, still growing or filling out, we recommend sizing up! Matching Gear Trout Ultralight Leash Olive Waterproof Leash Seafoam Waterproof Leash Gone Fishing Bandana Orange Topo Bandana Olive Sherpa Jacket Evergreen Utility Pack Care Wash by hand in your bathtub or bucket. Use warm water and mild soap (not detergent). Thoroughly swish the collar around, then drain the dirty water. Repeat until the water runs clean. Hang to dry, uncoiled, away from direct sunlight. No chewing!