1. Quality material : Top quality durable Soft Nylon dog collar with reflective threads , anti-rust metal alloy buckle for easily use , these buckles are made of eco-friendly metal alloy , all of them and metal D ring are with anti-rusting finish ,Reflective stitching for increased nighttime visibility . 2. Full collar size : Adjustable size for dog’s neck like 8.5-12’’ ( XS ) , 10-15.5’’ ( S ) , 13.5-21’’ ( M ) , 15.5-25’’ ( L ) . Being able to find the suitable size for your pets from us here . 3. Multi colors : Black , Red , Blue , Green and Purple . Getting the pleasant colors for your baby dog from us as you enjoy . 4. Order confirmation : All photos are taken as a sample of showing the dog collars , please try to measure your pets’ neck carefully to make the right purchase , always look at the size chart for the correct weight range to confirm the size . 5. Quality warranty : We only focus on the best quality with satisfying service to our clients , so if any reasons in one year , you are not completely satisfied with Newpets dog collar , every penny can be refundable to you or replace the new one at no cost if there is a quality issue .