1. High density transparent PET/PE material, it could maintain long term of vacuum state. The thickness is PET0.012MM+PE0.058mm

2. The bag is transparent, it adopts special double-line seal clip-clasp. ( The slide fastener uses double-line seal runner. ). With special sealed plastic clip-clasp., it is operated easily and convenient for closing and performed perfectly on airproof capability.

3. Single-line vent, there is a rubber film which could prevent air to leak in the valve. ( triplex prevent leak patent design). Never leak air.

4. The material is moistureproof, anti-fungus, it could protect clothes effectively

5. Tridimensional storage design, fasten the bottom size, it could put orderly and couldn't slide and operated easily