clear, transparent to easily monitor water bowl levels from outside of kennel Spill resistant RIM which aids in preventing spill overs during flight movements Made of durable clear plastic to withstand years of use Rounded edges for added safety for your pet Securely and easily clips over horizontal wire of all carrier/kennel doors Holds 1 Cup each measures 4"L x 3.25"Wx 2"Depth Spill Resistant Transparent, Hook-on Kennel Cups No more thirsty pets, empty spilled water bowls & wet pet carrier floors.