This backpacking rucksack, which comes in men’s and women’s styles, has an adjustable back system; very comfortable; hydration system-compatible; large bellows size pockets; side compression straps; zipped bellows base pocket, one wand pocket; front pocket converts to waistpack or can be removed to save 270g. But 3850g is very heavy; floating lid design could allow water into main compartment; high price for what you get.