ALAYNA Waterproof Backpack

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  • Regular price $45.00
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The latest backpack and travel backpack model of Alayna picnic fashion brand. With a tight zipper, the spacious main compartment structure makes it easy to store your belongings, outside it is a golden key cord that can be customized to the size of each body as well as the weight of the backpack. 70L volume provides users with mobility, allowing you to make trips from 5 to 10 days without worrying.

Describe .

Compact design hugs the back. .With a special power strap that evenly spreads weight across your back.

2-in-1 design, both portable and portable, can carry both sides of the head to ensure the smoothness of the user.

Strong strap design, high bearing capacity, fabric with cool cushion, easy to tighten or loosen only by simple operation.

The main fabric of the product made of PUC material, extremely sturdy and abrasion resistant, with water resistance, dust-proof and high UV protection will absolutely help you feel secure about your belongings. ..


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The most important helmet fitting aspect to consider before determining helmet size is helmet shape. The shape of the rider's head plays a crucial role in selecting a proper fitting motorcycle helmet. All helmet manufacturers design their lids to fit a specific head shape. These often range across three primary designations - long oval, intermediate oval, and round oval.

  • Long Oval - Shaped for a head which is longer front-to-back (from forehead to the back of the skull) than it is side-to-side (ear to ear).
  • Intermediate Oval - Shaped for a head which is slightly longer front-to-back than it is side-to-side. Most motorcycle helmets will fall into this category as it is the most common head shape; if a helmet does not state its shape, this is usually it.
  • Round Oval - Shaped for a head which has almost identical front-to-back and side-to-side measurements.

Once the head shape is determined, it is easier to filter the enormous selection of available motorcycle helmets down to a smaller, more appropriate list of those which will fit the rider's head. Now it is time to find the correct size of the motorcycle helmet.

Helmet Safety Standards

DOT Helmet Standard:  This stands for “Department of Transportation,” (not “doin’ our thang”) but the standard is FMVSS 218, the Federal Motor Vehicle Safety Standard #218, Motorcycle Helmets, and it is applicable to helmets sold in the U.S. for on-road use.

ECE 22.05 Helmet Standard:  ECE stands for “Economic Commission for Europe,” which was created under a United Nations agreement in 1958.  The 22.05 part refers to the specific regulation that the standards for testing are described in.

Snell (Snell Memorial Foundation M2010) Helmet Standard:  The Snell Memorial Foundation is a private, non-profit organization formed in 1957 dedicated to improving helmet safety. Snell goes beyond the governmental standard-setting approach and is available to assist manufacturers with helmet development by offering prototype testing.

What is MIPS technology? MIPS stands for Multi-directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts. MIPS has been developed by leading brain surgeons and scientists to reduce the rotational forces on the brain caused by angled impacts to the head.