The Wendy Backpack sewing pattern is meant specifically for transparent vinyl only. Full videos are included! π Watch the walk through here. Small 12" x 13" x 3"Med 15" x 16" x 4"Full 16.5" x 18.5" x 5" Please note the large is REALLY LARGE! π -3 size options Small, Med, Large small : perfect for a child's backpack or a woman's purse med : good for day trips or if you're a person that likes to have a bigger sized purse large : (very large- great for stadium events where you want to pack a blanket and hat/gloves/etc...) Materials, Supplies & Tools (full size): Two rolls (18β x 52β) 10 gauge vinyl or 1 full yard Two pieces 6β x 10β stretchy mesh for side pockets One package Wrightβs Extra-Wide double-fold binding tape or approximately 3 yards. TEFLON or non-stick sewing foot (critical for optimal success) Universal Chrome sewing needles either size 80 or 90 Gutermann all-purpose poly blend thread or other poly blend thread that is strong, cotton thread is not advised for sewing vinyl. Marking tool or eraseable pen or sharpie. (If using a sharpie youβll need acetone nail polish remover or alcohol wipes to erase it after bag completion.) Webbing: 2.5 yards (I highly recommend 1 1/2β width heavy duty webbing.) One 30β double-headed zipper (handbag preferred - they have wider tape 4.5 or 5mm). Two D-rings 1 1/2β width Two adjustable sliders 1 1/2β width (Optional) lobster clasp key ring holder 1/2β width Hairdryer for turning vinyl RSO with ease Fray Check -full length video walk through on my channel for free here - NOTE this is a digital download