This pet carrier backpack features innovative design concepts specifically created for modern pet ownersThe upgraded version includes a quiet fan system powered by USB interface, ensuring your pet stays cool and comfortable in hot weather Multiple breathable mesh windows create air circulation, effectively preventing stuffiness and odor accumulation The tan high-transparency space capsule panel provides pets with a view of the outside world while effectively filtering UV rays Prevents discomfort caused by direct strong light, making outdoor experiences more enjoyable Ergonomic double shoulder straps with thickened pressure-relief pads and breathable back mesh Ensure comfortable carrying even for extended periods, suitable for hiking, travel, and various scenarios Carefully designed interior space accommodates most small to medium dogs and cats Expandable versions provide additional space for multi-pet households or those needing to carry more supplies Comprehensive safety upgrades include built-in pet leash attachment points to prevent accidental escapes Reinforced bottom structure and non-slip pads ensure stability when the backpack is placed Front multi-function storage pocket conveniently holds pet treats, water bottles, and small toys Made from durable waterproof material that is easy to clean and maintain Ideal for daily outings, veterinary visits, and travel adventures