Staples Coastwide Professional Self-Sealing Poly Mailer 10" x 13" White 1000/Carton CW56659VS

Sold as 1000/Carton. Overall outside dimensions could vary. Polyethylene exterior supports secure label and ink adhesion. Tensile strength: 4.5 lbs./in.(min). Single-use self-sealing closure. Self-seal flap with a tear strip enables easy closing and opening. Elongation at break: 300% (min). Mailers are made of polypropylene and come in white. Puncture, water, tamper and tear resistant for defense against the elements, unauthorized opening and the rigors of shipping. Bottom or side seam: 3.8 lbs./in (min). Opens easily with a tear strip. Strong seams help keep the envelope intact even when overloaded. 1000/Carton.