Summer is coming, searching for the perfect dog lifejacket for your friend, but do not feel like spending time choosing the best ? We have done it for you ! The Doglay dog lifejacket is the best present for your dogs, you can play with your pets to promote the relationship between you and your pet. No more worrying about the hot summer days! XXS :Chest Girth(11"-13.78"), Neck Girth(7.5"-10.6"),Back Length(5.9") XS :Chest Girth(11.8"-16.5"), Neck Girth(9.8"-13.8"),Back Length(7.9") S :Chest Girth(16.1"-20.9"), Neck Girth(14.2"-18.5"),Back Length(10.2") M :Chest Girth(16.1"-24.8"), Neck Girth(15.7"-18.9"),Back Length(11.8") L :Chest Girth(19.7"-29.5"), Neck Girth(16.5"-21.3"),Back Length(13.8") XL :Chest Girth(27.6"-38.6"), Neck Girth(19.7"-27.6"),Back Length(17.7") XXL :Chest Girth(34.65"-48.8"), Neck Girth(24.4"-35.43"),Back Length(18.9") Velcro design Make putting on and taking off more convenient, save time, and use Velcro to be more personal. Reflective strips The high-visibility reflective stripes can enhance visibility in water or low light conditions, make you quickly find your dog at a glance. Heavy-duty D-ring hook The heavy-duty D-ring hook is perfect for dog leash. breathable mesh & Quick-Release buckle breathable mesh design allows for proper water drainage and quickly dried, let your puppy play easily and freely in the water. Strong rescue handle The handle on the top for quick and easy rescues if your dog is in danger. Adjustable buckles Adjustable belt and quick-release buckles to make you easy to put on and take off.