Thic-Thin Bags construction offer superior handle strength while offering the economy of lighter gauge body. These bags are an ideal alternative for food, groceries and retail operations that require the functional packaging but getting tired of the overwhelming T-shirt bags. Suggested Measurement (Wavey Top Style): - 12 x 12 + 3 - 15 x 15 + 3 - 18 x 18 + 3 - 20 x 20 + 3 Suggested Measurement (Straight Top Style): - 12 x 15 + 3 - 15 x 18 + 3 - 18 x 18 + 4 - 20 x 20 + 5 For more info about Thic-Thin Bags