I've crocheted a lavender-colored net-stitch granny bag with cotton yarn. I think you can use it regardless of the season. It's also good as a sub-bag or an eco-bag. You can also carry it in your bag. Image 1 shows it with a folding umbrella and a stole inside. Image 8 shows it with a 500ml plastic bottle as well. A convenience store lunch box fits in it. Image 9 shows a small case about the size of a lunch box inside. Size (laid flat) Top width...36cm Height...Shallowest part 28cm ...Deepest part 32cm Handle...34cm (can be worn over the shoulder) Bottom...25cm Please understand that there may be some slight variations. This is a handmade item created by an amateur as a hobby. Please purchase if you understand handmade items. I am also selling it elsewhere, so I may delete it suddenly. Thank you for your understanding. Thank you for looking.