PDF downloadable sewing pattern. The Speedwell Sling bag is the perfect unisex bag. It has one front zippered flap pocket with 2 zippers on each side and closes at the top with your choice of a small thumb lock, turn lock or magnetic snap. When the flap is fully open, the contents will remain inside this front pocket thanks to the gussets on both sides. Inside this front flap pocket are 1 slip pocket and 1 zippered pocket.