Poly Mailers are an excellent and economical way to ship almost anything that does not need protections. Unlike other Shipping Supplies, Poly Mailing Envelopes do not contain any bubble, foam or paper cushioning. Therefore, the Poly Shipping Mailers are less expenses than other Shipping Bags. Poly Mailing Bags also are lighter weight so they are less expensive to ship your products. Poly Envelopes can be used to ship clothes, bathing suits, shoes, books, magazines, etc. Plastic Mailing Envelopes come in a wide variety of thicknesses, colors, and sizes. The thickness can range from 2.0 mil to 3.0 mil. The most typical color is White Poly Mailers. However, the actual color is more off-white or gray. The sizes for Poly Mailer Envelopes range from 6" x 9" all the way up to 24" x 24". The size of the Mailing Envelopes are typically the actual usable area.