Micro-mesh system makes friction more suitable for fine clothing. Our strong wash bags are made from stain, stretch and tear resistant material -- 100% polyester. Including 1 large bag 16" x 20" (40 x 50 cm), 1 medium bag 12" x 16" (30 x 40 cm), 1 small bag 9" x 12" (23 x 30 cm) to ensure you can use them for all your delicates. Our premium anti-rust zipper with auto lock and smart zipper protection will prevent the bag from opening during washing and drying cycle. Youll have a new quiet and a snag-free laundry experience. It is the best to protect delicates, extend the life of your big clothes, bed sheet, bedcover, household and jeans, sweater, jackets or even pet blanket and stuffed toys. Great as a clothes storage organization bag when travel.