Silicone Collapsible Coffee Cup, Food-Grade Silicone Pocket-Sized Travel Camping Mug, Reusable Portable Cup for Backpacking, Microwave Safe,12-Ounce, Blue

Very easy it to and it collapses which is awesome. I don’t use the clip so not sure how that works, but awesome you could carry it on your backpack.

The hot holder ring is supposed to slide into the bottom of the cup when collapsed. Although it does fit it slides right out when you pick it up. This defeats the purpose of it being clipped onto the side of the backpack.

Can carry around without much difficulty, also easy to clean.

Silicone color changed to gray in one week. Don't keep hot drinks warm in office, only 15min

The slider cuff does falls out when collapsed and the opening to drink is so small it’s tough to drink from. I would not purchase this item again nor would I recommend it to a friend.

Portable. Used it for making coffee.

Liquid is everywhere ,unstable , do not close tighly when use them cannot close notes until dry because will spread/stain everywhere

Love them and I know my wife will love hers too!