PETTENA DAKKO is equipped with an expandable cage made of plastic steel that has moderate elasticity and is resistant to breakage. Unlike traditional metal frames, it has a lower risk of completely breaking even under strong impact, protecting the safety of pets and owners. The expandable cage allows pets to have a comfortable space within the regulated size on trains, and provides a spacious resting area at service areas during long car journeys, reducing stress for pets. The main body of the pet backpack features an openable top cover to facilitate interaction with your pet; the 30-degree gold angle support design provides a stable resting place for your pet's head, effectively protecting the neck bones and enabling close companionship during travel. Peace of mind even in sudden rain or strong sunlight. The dedicated top cover for the PETTENA dog backpack completely covers the opening, providing both rain and sun protection simultaneously. No additional measures are needed, so you can travel light without increasing your luggage. Large mesh windows ensure continuous air exchange inside and outside the bag, allowing your pet to breathe fresh air and stay cool and comfortable; effectively preventing stuffiness and the accumulation of unpleasant odors inside the cabin, keeping the entire journey clean and refreshing. PETTENA is constantly striving to improve its products and is dedicated to providing customers with better products and services. Product specifications: Weight: 860g - Recommended maximum load capacity: 8kg - Main body size: 34*24*38cm - Expanded size: 34*58*38cm.