Adjustable straps to fit
Head (including goggles frame) - 15cm - 30cm (5.9" - 11.7”) 
Chin elastic cord - 8.5cm - 17cm (3.3" - 6.6”)
 
These sunglasses will help protect you pups eyes while you're out.  They are windproof, waterproof, block debris and have UV protection.  Sponge is padded around the lenses for comfort.  This high density sponge has a great breathable effect and thermal performance while alleviating pressure.