Made of premium quality recycled material. Each part of the bag goes through a series of quality tests to ensure we are delivering the best to you. With the purchase of any uppercase product, you just partnered with us in lowering your carbon footprint and making the world a bit more beautiful.Convenient trolley sleeve on the back allows the bag to be securely placed on a trolley for longer journeys. Air mesh on the back optimises breathability and regulates temperature while you wear the backpack. Rainproof zippers with 3x more water-resistant material.Spacious compartments that can carry 10+ A4-sized books or 2-3 sets of clothes, and all your essential chargers and electronics. Front access pocket for you to easily carry important small items with two bottle holders on the sides. Ultra-comfortable shoulder straps with thick padding. Dimensions : (L x B x H) : 28.2 x 14.1 x 42.2 cm