Search query: trecking gear backpack with back support system

Product: ROYAL MOUNTAIN 50L Light-Weight Backpack for Hiking and Travel, Waterproof Climbing Daypack for Outdoor Sports Adventures Camping Trekking, Navy Features:
√Ergonomic padded shoulder straps and back support for best ventilation and easing burden in order to make carrying the backpack more comfortable.
√Chest belt and waist belt are available to adjust.
√Crafted from water resistant and tear resistant nylon fabric, very much durable.
√Rain cover stored in a bottom pocket which could protect your camping bag does not get wet in a raining day.
50L LARGE-CAPACITY -- Different compartments and pockets, enough to bring a tent, roll up blanket, clothes, pens, etc. to keep your stuff separate and organized no matter if it's a day trip or a week-long journey.
COMFORTABLE PADDING -- Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. Molded foam back panel with airflow channels to keep your back cool and dry.
DESIGN FOR HIKING TRIP -- Classical carrying system with attachment points for trekking poles, rolled blanket and other equipment. An emergency whistle buckle on the shoulder strap helps you easily call for help in an emergency. A water exit is convenient for drinking.
DURABLE NYLON FABRIC -- Using high-quality anti-scratch nylon fabric, with the strong hanging system, it's able to carry more items, provides extra strength and long-lasting performance with the lightest weight possible.
WATER-RESISTANT SURFACE & WATER-PROOF RAIN COVER -- Nylon is well-known as water-resistant material which can quickly slide water aside before water gets a chance to penetrate the inside. Also, a waterproof rain cover can protect the whole pack from rain and water during Climbing, Camping, Hiking Travelling, etc. ROYAL MOUNTAIN Navy