The Tahoma 40L Backpack is JanSport's largest, most technical pack for trekking long distances with all you need for a day. Its MoonLift suspension pairs a supportive aluminum stay with a sturdy backboard encased in breathable, padded mesh. Paired with padded shoulder straps and a waistbelt, and MoonLift feels light and right when you're carrying for the whole family. There's a padded sleeve inside sized for 3L hydration reservoirs or 15-inch laptops if you use the pack for more casual days off the mountain.