ACS Tight system with a body-hugging fit and outstanding ventilation Lightly padded, stowaway waist belt for custom carrying options Trekking pole lashing straps and LED light attachment Large main compartment with an inner separator that doubles as stow pouch for a water bladder Elasticated helmet compartment on front with waist belt pockets Organiser in the front pocket with small pockets and pouches for small items Equipped for a hydration system with the tube duct and fastener Integrated rain cover in base compartment Good things come in small packages. The MOAB JAM 18 is a top choice for all your outdoor activities, especially energetic ones. The main compartment is big enough for your rain gear, snacks and water bottle. Designed with their ACS Tight back system to help keep you mobile, it's designed to sit close to your body so you remain in full control of the load - even when you're moving fast. The central air channel at the back and the air-permeable padding cool your back as you move. Ideal for a range of outdoor activities, it features a helmet compartment and LED light attachment that is super practical for biking trips. And when you go hiking, you've got lashing straps for your trekking poles and a useful rain cover.