Collar Sizing
We recommend measuring your existing collar to figure out the best size for your pup. Because the Lifetime Collar is designed to slip over your dog's head, be sure to add some length so it's still comfortable to slip on.
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Sizing & Fit
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All things sizing and fit related for the Atlas Pet Company Lifetime Collar, Lifetime Lite Collar, and Lifetime Harness. Get your pup fitted right the first time and skip the hassle of returns & exchanges. If in-between sizes always size up.