This series of lightweight, single-compartment packs is versatile and can be used for everything from day trips to long-term backpacking. The Hesper 30 weighs just 730g (S2 size). Despite its light weight, it boasts a 30L capacity, making it a perfect technical pack for storing carefully selected gear. It features a lightweight "Helium Air" back ventilation panel and a frameless design for active movement. It features a simple single compartment and panel loading with a zippered interior. Stretch stash pockets on the front and sides allow for quick access. The fixed waist harness ensures a stable, comfortable fit. Fabric 100D Ripstop Nylon (81%Recycled, 19% Virgin with UTS coating) 210D Nylon (100%Recycled bluesign approved) Function macpac's lightest hiking harness, the HeliumAir; a comfortable, snug-fitting back panel for airflow; a fixed waist belt for versatile use; a zippered U-shaped opening; a top pocket with a key clip; elastic front and side stash pockets; webbing loops for front bungee attachment (bungee cord not included); stowable pole/ice axe attachment; side compression straps; two waist belt pockets (one with a zipper); hydration compatible country of origin Philippines Size 2, 3 Weight S2/approx. 730g S3/approx. 780g Color phantom size H55xW30xD19cm(S2/S3) Capacity 30L (S2/S3) remarks Harness system: HeliumAir The back panel fits snugly against your back for comfort and airflow, making this hiking harness a great balance of comfort and lightness. Target load guideline Minimum 6kg Max 14kg