BoonNursh Silicone Straw Sippy Cup Lid - Conversion Top for Bottles - Toddler Cup Top - Changes Baby Bottles into Cups - 2 Count

These are great!! Having already had the Boon bottles from my baby registry, these are a perfect upgrade for baby who’s ready to move to sippy cup style! Love that they are a valves straw so no backwash and graduated drinking which allows for baby to not choke on water as they learn. Mostly spill proof though some does leak out of the straw a little but has been dropped on the floor and tipped upside down multiple times and doesn't spill! As an OT mama I love this option in place of a standard sippy cup

love the idea of these, i’m a big fan of boon, but since they are more leak proof it is harder to drink through the straw it requires more suck. not a good option for my 10 month old learning to use a straw but keeping it for toddler age.

Awesome and durable! My son has broken a few cups! I ordered these so we can start transitioning off bottles! They’re sturdy, and don’t leak!

Love that I can continue to use our Boon bottles! They’re easy for our little one to hold or to hook something through the frame to securing it to a stroller or high chair. Anyway, the straw top addition is simple to take apart and clean. I like the stopper in the straw so it doesn’t constantly leak and when my girl was learning to drink from straws I would squeeze the bottle a bit to “fill” the top of the straw. Worked like a charm. The downside: the lid. Completely sucks. It just pops off all the the time, and if it doesn’t completely pop off then it gets stuck on the straw. We just take the lid off which is a bit of extra work when traveling, but overall worth it.

I love the Boon bottles for being so versatile & having the chance to turn the cup into a sippy cup with these sippy lids. It fits perfectly & they’re so easy to clean!! The quality is perfect in my opinion for my toddler & they function perfectly.

Sadly disappointed as we love the nursh bottles. I’m trying to wean my 13 month old off the bottle. She can drink from other straw cups but was frustrated that this one was very difficult to sip. (I also tried it) She abandoned her milk before it was finished. She also doesn’t realize she can’t tip her cup up so a weighted straw or some other solution would be nice. Also, there’s way too much room above the valve and any milk above it leaks terribly.

Love boon but not this! It’s impossible for little ones to get any water out of the straw. As an adult with stronger sucking power I barely got any water!

I love that these fit on the boon bottles! My baby transitioned to these easily. Great for at home and on the go. I love the flow control.NOTE: THEY ARE NOT LEAK PROOF. They are flow controlled.