With glamorous rhinestone hearts on the lenses of these New Pink K9 Optix(TM) and comfortable plastic bone side "arms". Designed just for dogs! Unique three strap system is fully adjustable. 100% UV block, shatterproof lenses. Wide nose bridge. Very stylish bone accents. Available in Extra-Small, Small, Medium and Large.
Sizing
To determine proper back strap and frame length, measure the entire head circumference across the eyes and around under the ears. To determine proper chin strap length, start measurement just under one ear, go under the chin and back up to under the other ear.

X-SmallBack Strap and Frame Measurement 5"-13" Chin Strap Measurement 3"-7" Fits Approximate Weight 1 - 10 lbsSmallBack Strap and Frame Measurement 12"-20" Chin Strap Measurement 4"-8" Fits Approximate Weight 9-25 lbs MediumBack Strap and Frame Measurement 15"-25" Chin Strap Measurement 5"-11" Fits Approximate Weight 20-50 lbs LargeBack Strap and Frame Measurement 18"-30" Chin Strap Measurement 6"-15" Fits Approximate Weight 50-75 lbs X-largeBack Strap and Frame Measurement 22"-45" Chin Strap Measurement 11"-26" Fits Approximate Weight over 75 lbs
Please note: Due to their facial structure, Doggles glasses are not recommended for Pugs. Pugs lack the nose bridge necessary to support glasses.