Which men's daypacks have the largest capacity for carrying gear?

The Quest Expedition 65L Backpack is a large hiking pack with a padded ventilated back, adjustable waist belt, rain cover, trekking pole loops, and expandable mesh side pockets. Its high capacity and supportive features suit multi-day hikes, camping trips, and carrying bulky outdoor gear.

The AMPEX Transcend 50L Backpack is a framed hiking pack with adjustable support, ventilated panels, hipbelt pockets, exterior gear attachment points, and a removable top lid. It includes a rain cover and hydration reservoir sleeve, making it suitable for multi-day hiking and camping.

The Peak Design 45L Travel Backpack expands from 30L to 45L and includes a weather-resistant 400D nylon construction, multiple access points, and dedicated laptop storage. It suits travelers, photographers, and professionals carrying substantial clothing, camera equipment, or work gear.

The Quest Expedition 45L Backpack is a lightweight hiking pack with a 45L capacity, adjustable support system, multiple zippered pockets, water-bottle storage, trekking-pole loops, and an included rain cover. It suits hikers, campers, and travelers who need substantial gear capacity with ventilation and weight-distribution features.

The Gregory Stout 35 is a 35 L hiking backpack with a lightweight alloy frame, adjustable torso length, breathable 3D foam backpanel, padded hipbelt, rain cover, and multiple storage areas. It suits day hikes, trekking, and lightweight overnight trips where carrying comfort and organized gear storage are important.

The Pa'lante V2 is a lightweight, frameless roll-top backpack with accessible shoulder-strap, side, front, and bottom pockets, plus a stashable hip belt. It suits experienced ultralight backpackers carrying compact gear and loads up to about 25 lb.