These funky little triangle bags are a stock item and come in three sizes.  Small, Medium and Large. Each one is just a little bit different. Some have an appliqué of a creature, some have just an accent stripe and some are blank. They all have a zipper and a loop, a clip or a handle.  The styles are just too numerous so when you order you just specify the size and  appliqé or no appliqué.  The decoration will be your surprise.  But the uses you can put them to are endless.  Just one is not enough.  If you add one with another bag they ship at no cost otherwise shipping is too much to just buy one on its own.  Approximate sizes are small 8" x 8"; medium 12" x 12" and large 14" x 14".  The cost is the same for each size since they all take the same amount of time to make and the same cost for features.  The large will have a loop to carry it by.