Teal Poly Mailers 14.5" x 19", 100 Pcs Large Poly Mailers for Small Business Self-Seal Shipping Bags for Clothing, Shipping Envelopes, Packaging Bags, Mailing Poly Bags - Walmart.com
Shipping supplies - Canada Post
100 #4 (XPAK) 9.5" X 14.5" (usable space 9.5" x 13.75") Canada