PERSONAL ORGANISER - Internal organiser and pockets keep everything from laptop to compass securely stored , STAY COOL - Vented foam Flow back system lets your skin breathe , HYDRATION COMPATIBLE - Pack is compatible with hydration systems to keep you refreshed on the move , Durable polyester fabric shrugs off scuffs , Attachment points for walking poles , Whether it’s keeping you organised on a day hike or your way to work, the Twentyfourseven+ 25 keeps everything from laptop to walking poles handy , Approximately 49 cm (H) x 28 cm (W) x 24 cm (D)