Enough capacity for spare layering, energy food, and water, plus the ventilated support of the ventilated VaporSpan suspension. The Sula 18 is at home on the trail to your favorite swimming hole. 
 
(One Size) 
Dimensions: 48.3cm x 30.5cm x 19.1cm 
Maximum carry: 20lbs 
Volume: 18L 
Weight: 1.89lbs 
 
Materials 
Bag: 100% Nylon 
Bottom: 210D Nylon Dobby 
Back: 210D Cryptorip Nylon 
Lining: 135D High Density Embossed Polyester 
Frame: 4mm Alloy Steel & 3mm Alloy anti-barreling stay & HDPE 
 Suspension: Perforated EVA foam