According to your body shape, we offer 2 sizes: you are shorter than 170 cm (size S)/you are 170 cm or taller (size L).You will also like the flask access without removing the bag.
*Carrying comfort:Taut mesh back. Preformed belt, padded and adjustable straps. Thumb rests
*Ventilation:Ventilated, taut mesh back (AirCooling brand) to regulate perspiration
*Capacity:20 L / Dimensions: H 60 cm; L 30 cm; D 20 cm
*Lightweight:20 L: only 1,100 g in size S, 1,270 g in size L
*Content protection:Coated waterproof fabric and built-in rain cover at the bottom of the rucksack
*Multiple compartments:9 pockets including 2 quick access for flask 1 water compartment, 2 belt pockets
*Easy opening / closing:Side zip opening to access the main bag compartment.
Main fabric 88% Polyester, 12% Polyurethane Lining 90% Polyester, 10% Polyurethane Back fabric 100% Polyester Pocket 85% Polyamide, 15% Elasthane Yoke 85% Polyester, 15% Polyurethane Webbing 100% Polyester.