I got this for my elderly mother who insists on trying to balance her 40oz tumblers of Diet Coke along with her purse, quilting bag, tote, etc. Not to mention because she loses these massive cups all the time. She was not disappointed! Its very sturdy, helps keep insulated tumblers cold, and you can carry it over your shoulder(or like my mother, cross body style). Its easy to take apart and wash. It fits her cell, credit cards, and even keys. She still insists on her purse but can now easily bring her cups hands free. Highly recommend for tumbler owners. I myself prefer sip %26 close insulated bottles but will keep my eyes out if they start to make holders for those. Only other small request? I do wish they came in all sorts of designs but my mother liked the purple :)