Hanwoong is waterproof bag manufacturer recognized as high quality and techniques. We have focused on waterproof dry bags, waterproof camera bags, waterproof bike bags and waterproof outdoor backpacks since 1993.
From camping bags, self inflating air mattresses, air cushion, air tubes, air pads, waist bags, shoulder bags, pouch, shock absorbing notebook bags to air mattresses, eruwha will satisfy your expectations.

We produce AIR TUBES and S/SHARP TUBES for the notebook bag or the notebook airbag. Our Air tubes and S/Sharp tubes guarantee the notebook bag or the notebook airbag to protect the notebook computer from any damage caused by the shock. Our Air tubes and S/Sharp tubes is the best solution to the notebook bag or the notebook airbag. So You are recommanded to adopt our Air tubes and S/Sharp tubes for your notebook bag and the notebook airbag.



Your notebook bag or notebook airbag with our air tubes and S/sharp tubes would have good reputation among the users and the manufacturers of the notebook computers.
We often see an expensive notebook computer carried around unprotected in a bag.
To depend on a simple P.E sponge to protect your notebook computer leaves open a possibility to damage the computer.

For better shock absorption for a notebook computer, AIR TUBE and S/SHARP TUBE are produced after going through tests done by Commodity Inspection Lab.

When a notebook computer receives a shock from the outside, the air filled TUBE absorbs the shock, as a result, preventing the computer from being damaged and minimizing the external impact.
" This product has obtained a domestic patent as well as an international patent, and being attached to a bag to be exported. In addition, INSERT CASE that is perfectly waterproof and absorb shock is successfully developed.