Here’s a great Amazon deal for you. Through 1/20/20, you can use the code XZXA7AYD at checkout to save 40% on this Esonmus 8L Insulated Waterproof Lunch Bag. Regularly priced at $15.99, your price will be just $9.59 with the promo code. Here is the link to get yours:
Esonmus 8L Insulated Waterproof Lunch Bag – only $9.59 with the code XZXA7AYD at checkout (reg. $15.99)
This item has pretty solid reviews too, averaging 4.1 out of 5 stars.