The versatile, stable Prelight Vent 25 S-L-R backpack with AEROVENT PRO carrying system ensures optimal air circulation even on hot summer hikes. It can also be individually adjusted to your body size. Practical features include integration for a hydration system, a included rain cover, and a padded hip belt. The best part is that it is made from recycled materials and environmentally friendly dyes, making it bluesign certified.