Lupine Reflective Dog Collar 1" Wide Green Diamond Adjusts from 12" to 20" Lupine products are proudly built in Conway, New Hampshire and Guaranteed (Even if Chewed). They are not chew-proof (no fabric is!) but if they get chewed, LupinePet will replace them. Search on 'Lupine Guarantee' to see how EZ it is!Lupine High Lights are made from nylon with reflective threads woven into the front, back and edges for maximum visibility. The reflective threads bounce light back to an observer so that these products may be seen in low-light or dark conditions when light shines on them. Made with strong bar-tack stitching, welded steel hardware, and ends which are turned under and stitched to protect fur and skin. Matching leashes and harnesses are available.High Lights are available in 6 bright colors and three widths: 1/2", 3/4" and 1". These 1" wide collars are available in three adjustable size ranges: 12-20 inches; 16-28 inches; 25-31 inches. To determine correct collar size, measure snugly around the middle of the dog's neck, then add an extra 5-percent for a comfortable fit. Or, measure the current collar.Machine or hand-wash, warm water and mild soap (no bleach or bleach alternative). Air dry completely before use.Lupine products are not intended for tie-out. Features Proudly Built in New Hampshire and Guaranteed (Even if Chewed) Highly reflective threads are woven into the front, back and edges for maximum visibility 1-inch wide, adjustable from 12 to 20-inches long For best size choice, always measure the current collar or measure snug around the middle of the dog's neck and then add 5-percent more for a comfortable fit Matching padded handle leashes and harnesses are available USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.