These clip-on cup holders are one of those simple gadgets that you didn't know you needed until you have them. You get two holders, so you can put one on your stroller and one on your bike, or whatever combination works for you. The clip design is super versatile - it fits on stroller handles, bike handlebars, shopping carts, scooters, even mic stands if you're into that. The adjustable opening means it can hold everything from skinny water bottles to wider coffee cups and baby bottles. The ABS plastic is lightweight but sturdy, and it has this anti-slip grip so your drinks don't go flying when you're moving. At about 6x4x2.5 inches, it's compact enough not to get in the way but still holds most standard drink containers. When you're pushing a stroller, having a drink holder means you don't have to dig through your bag every time you're thirsty. For biking, it keeps your water bottle accessible without those annoying cage mounts. The rotation feature lets you angle it however works best for your setup. Seriously, for the price of getting two, these are totally worth it for the convenience they add to your daily outings.