Details Show Large capacity & Built-in hook The large-capacity of backpack provides enough room, easy for pets to move around. Built-in adjustable buckle with clamp can connect with pet's collar/harness to keep pet safe. Pockets & Breathable material One front pocket and two side pockets can store a collapsible pet bowl, water glass, leash, whistle, snacks, poop bag, phone and other necessities. Padded shoulder & Breathable back The adjustable shoulder straps are made from thickened sponge and breathable mesh, help reduce the burden, more comfortable to carry dogs/cat. The back is made of breathable mesh cloth, which makes pet feel comfortable inside. Read more Adjustable neck hole Removable bottom cover Two sizes show Read more Dog Carrier Backpack Size Chart Suitable for Multi-occasions ESPFHN dog carrier backpack is made of high-quality breathable mesh material, with thoughtful design and ergonomic thick sponge back and strap , providing a sense of safety and comfort when you carry your pet outside. Enjoey your good time with your friends!