Waterproof backpack or water-resistant backpack, are they the same? You may have the same question like most of us. Well, there are a few differences between the waterproof backpack and water-resistant backpack in material, production technology. Let's talk about them separately.
Waterproof backpack means the backpack can be submerged. So if a backpack is labeled waterproof, which means you can take it anywhere or even diving since this backpack can completely submerge in the water with keeping inside dry. A waterproof backpack is usually made of heavy duty PVC or TPU coated fabrics. Those fabrics have good waterproof features that can stop water getting in at most harsh conditions. You can take the waterproof backpack to kayak, raft or cross a river. In production technology a waterproof backpack is fully welded seams by high frequency not sewing and taped, which means the seams can bear too much water pressure without pop up. And even the zipper—a zipper used on waterproof backpack must be a waterproof one. The zipper is usually welded to the backpack in order to keep the water out. Some backpacks are welded with air-tight zipper in order to gain better waterproof performance. Airtight zipper is much better than the water-tight zipper.
Beg galas -Tahan Air
Beg galas -Tahan air hanya kalis percikan-. Mereka hanya boleh melindungi peralatan anda daripada hujan atau percikan. Beg galas kalis air-biasanya diperbuat daripada nilon atau poliester, yang hanya ditenun padat-dengan salutan disapukan pada bahagian belakang. Semakin lama salutan semakin hilang. Dalam teknologi, beg galas kalis air-dijahit dan jahitan berpita. Pita mungkin muncul mengikut peredaran masa.
Jadi anda mungkin mempunyai idea bagaimana untuk memilih beg galas. Jika anda ingin berkayak, rakit atau cross rive anda harus memilih beg galas kalis air. Jika anda hanya ingin tertanya-tanya di bandar atau mendaki pada hujung minggu untuk beriadah, beg galas kalis air- sudah memadai.
