It is made of PVC. Keep your personal stuff in a good order and easily accessible. Water-resistant fabric will protect your personal items from penetration of moisture or bacterial, bring you a clean and comfortable trip. Company logo and name can be imprinted.It contains 3 packs, large size: 10"x 6.7" x 3.3", medium size: 9.6" x 6.7" x 3.1" , small size: 6.9" x 5.9" x 2.4".