Max and Neo NEO Nylon Buckle Reflective Dog Collar - We Donate a Collar to a Dog Rescue for Every Collar Sold YOUR PURCHASE HELPS A DOG RESCUE: For every collar sold, we donate an identical collar to a dog rescue. Dog rescues are in constant need of dog supplies. We donate 1 for 1 for every purchase. By purchasing one of our dog collars, you receive a premium high quality collar and you donate one to a rescue. Together we can support dog rescues with a never ending supply of collars. DOG RESCUES: Each month we donate to different rescues throughout the USA. At the end of every month, we tally up the number of leashes and collars sold. Based on the number, we determine how many rescues we can donate to for that month. We donate down our list of rescues until each one has received a donation and then we go back to the top of our list. In special cases, we will donate to rescues out of turn based on their immediate needs. QUALITY CONSTRUCTION: Our dog collar is 1" wide (3/4" S, 5/8" XS) and made with a 2mm thick nylon layer (1.5mm for XS). We use a heavy duty nylon snap buckle that has a lockable tab (XS not lockable) to prevent accidental release. We use a thick D-ring which is anodized to a gunmetal finish. The metal adjustment slider has a loop for dog tags and charms. The collar has a 2 wide reflective stitching bands which increase its visibility during night time walks. SIZING for NEO Collar: X-Small - Neck Size 8.5"-11" / Small - Neck Size 11"-15" / Medium - Neck Size 14.5"-19.5" / Large - Neck Size 17"-25" 1&#034; wide x 2mm thick nylon (3/4&#034; x 2mm for small size, 1/2&#034; x 1.5mm for X-small size) Reflective stitching for increased nighttime visibility Gunmetal finished quality metal