Integrated Design: Integrated with an insulated bottle pocket, pacifier holder, and washable changing mat, solving core travel pain points for parents. Built in antitheft pocket, stroller hook, and luggage straps, this bag addresses travel needs with a stylish, enduring design Convertible Carrying System: Features an innovative 3 mode conversion (backpack/single shoulder bag/tote bag) for flexible use. The detachable shoulder strap allows for instant stroller attachment, while the luggage strap is compatible with suitcases Waterproof Nylon Material: Made of 400D tear resistant waterproof nylon, stronger than ordinary fabrics, adopting reinforced explosion proof zipper, and wear resistant lining ensure stress free outdoor use in the rain. Elastic side pocket securely holds a large water bottle, and a top access window is included for emergencies Unisex Design: The unisex design is suitable for both men and women. From daily shopping to long distance travel, it's hands free in backpack mode and elegantly comfortable in carry on mode Laptop Compatibility: The hidden laptop compartment is compatible with up to 15.6 inch devices, making it a good companion for families with two children