The Singi 28 is right at home on hunting, fishing and trekking trips. Its main material is G-1000 HeavyDuty Eco fabric, with 65% recycled polyester and 35% organic cotton. The bottom is made of waterproof Nylon. - Recommended back length: 45 - 49 cm (the height difference between your iliatic crest and the most protruding vertebrae in your neck) - Detachable waist belt with spacious pockets - Inner pocket for a laptop or hydration system - Ample extra lashing points on the outside - Rain cover included - Compression straps - Adjustable chest strap - The fabric is impregnated for water repellency without using PFC