The internal frame backpack is a recent innovation, invented in 1967 by Greg Lowe, who went on to found Lowe Alpine and Lowepro, companies specializing in backpacks and other forms of carrying bags for various equipment.[8] An internal-frame pack has a large fabric section around an internal frame composed of strips of either aluminum, titanium or plastic, sometimes with additional metal stays to reinforce the frame. A complex series of straps works with the frame to distribute the weight and hold it in place. The internal frame permits the pack to fit closely to the wearer's back and minimizes shifting of the load, which is desirable when participating in activities that involve upper-body movement such as scrambling over rocky surfaces and skiing. However, the tight fit reduces ventilation, so these type of packs tend to be more sweaty than external frame packs. The internal construction also allows for a large storage compartment; a few lash points (including webbing loops and straps for sleeping bags and other large items) may be present, but as the frame is completely integrated, it is difficult to securely lash larger and heavier items which do not fit inside the compartment to the outside of the pack. Internal frame packs originally suffered from smaller load capacity and less comfortable fit during steady walking, but newer models have improved greatly in these respects. In addition, because of their snug fit, the improved internal frame models have largely replaced external frame backpacks for many activities.
Rolling backpacks are backpacks with wheels on the bottom and an extending handle. Because of their design, rolling backpacks reduce the strain on the user, though the shoulder straps may be used to carry the pack for short distances when the terrain is not suitable for wheels. Rolling backpacks are most commonly used while traveling by airplane or train. https://i.pinimg.com/236x/c0/55/ce/c055cebd7e3c24d8f3a19d5412ab7242--direct-sales-thirty-one.jpg
From casual cinch sacks to smartly-designed wallets and bags, 31 Gifts (or T.O.G. as their consultants like to refer to it) has you covered wherever your day may take you. Savings-savvy office workers love the insulated totes, lunch sacks and zipper pouches that keep cold food and drinks fresh for break time, enabling them to save money by prepping their own lunches at home. Moms swear by the company’s oversized totes, stacked with plentiful pockets for diaper change necessities, coupons, favorite toys and more. Fashionistas dig the bright, colorful makeup bags and change purses, infused with both functionality and style to keep them on the cutting edge. With such a wide variety of bags, it’s very easy for a consultant to match party attendees to a product that works well for their lifestyle.    https://i.pinimg.com/236x/84/79/eb/8479ebbbb1262a8d8d09b0d56b93b98f---gifts--ideas.jpg

Rolling backpacks are backpacks with wheels on the bottom and an extending handle. Because of their design, rolling backpacks reduce the strain on the user, though the shoulder straps may be used to carry the pack for short distances when the terrain is not suitable for wheels. Rolling backpacks are most commonly used while traveling by airplane or train. https://i.pinimg.com/236x/1c/15/c1/1c15c163dbe92b6fcfa64e5c1f0edbd3--life-changing-container-sales.jpg
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