New in Package! EXPANDABLE SOFT-SIDE CARRIER: Please measure pets before purchasing. BYTANA pet carrier normal size is 18"Lx 11"Wx 11"H, expandable size is 18" Lx 29.8"W x 11"H by expanding the 2 mesh windows. Fits pet up to 18”L*10”W*10”H, max load of 15lbs (Dogs cannot exceed 10 lbs). Please do not choose a pet carrier based on weight, please refer to your pet's length and height to choose the size of the pet carrier (product description)then Make sure pets don't exceed the maximum weight limit. DURABLE MATERIAL: Dog airplane carrier approved designed with microfiber frame prevents the top from sagging, keeping solid and stable even after total expanded. No collapse or deform like other pet travel carrier. EASY to CARRIER: The cat carrier designed with a hard PP pad into bottom, help to hold and increase load beaning, avoid deformation when carry on the carrier. The pad made of suede and polyester, washable and easy to clean.Mesh cloth increase ventilation and decrease anxiety for traveling. Carry the expandable carrier on airplane, car, by hand or shoulder. AIRPLANE APPROVED: Dog travel carrier compliance with airline standard size, fit under the front cabin seat of most airline carriers. Every airline has a specific set of rules and regulations, please contact with airline before flying with your pet. Tips: The pet carrier bag has been upgraded about color, the edge of the previous style is purple, and the edge of the new style is blue. The size and function of the new pet bag remain the same, both colors may be shipped randomly. PLEASE NOTE INTERIOR SIZING & PET MEASURING GUIDELINES BEFORE PURCHASE : PLEASE KEEP IN MIND that we show the exterior dimensions as well as approximate interior dimensions to best portray the usable interior space for your pet. The interior space will be less than exterior due to the fabric thickness and plush faux fleece padding.NOTE: Not suitable for large sized dogs.