We made two major upgrades in product features:added anti-leakage lock and made the water bowl cover foldable design.Make the dog water bottle small, portable and prevent water leakage.Meet your watering needs when walking with your dog and traveling . On the product material,we use high-density polyethylene that is safe and non-toxic , always pay attention to pet health .This pet travel bottle is a must for your home trip! [Product Upgrade Log] 5/30/2019, make the bottle strap 4 cm longer, to fit customer's hand size better. 6/5/2019, increased the sillincon bowls processing time in manufacturing, to enhance the anti-static and anti-dust; 6/20/2019, increased the thickness and strength of screw socket, make them bite more accurately. 6/30/2019, upgraded the snap and leash material to make it more stronger;ater bottle that is easy to use and has excellent performance .