Boon Snug Sip Universal Water and Juice Silicone Bottle Toppers - Soft Spout Conversion Caps with Spill Proof Valves - Silicone Bottle Covers for Travel - Includes 4 Toppers and 4 Cases

They work great! I love the fact they all have a case for easy travel! They fit any size bottle! Easy to use but hard for my kiddo to take off which is awesome! Seal completely no leaks! Good purchase for price

My favorite invention. Love to keep these in my bag for my kids if we forget their water bottles we can transform any water bottle into a kid friend option! The seal is great and the kids and use it themselves without spilling. Traveled with these and they’re universal. They fit perfectly in a purse or a backpack or just leave it in your car for emergencies. Whoever invented these is a genius because the design is great. Good value for money and you can take them anywhere!

Boon has a really good product line and I recommend them overall. This universal spout is perfect for toddlers whom aren’t quite ready for open drinks. I tested it in a few bottles I had available and found it is pretty close to universal. This spout fit perfectly on wide mouth bottles (Gatorade, Cirkul, etc.) and found no leaking. I did find it helpful to remove the entire bottle lid including the plastic ring at the bottom. I also found that the spout fits okay-ish on standard narrow mouth bottles (water, soda, etc.) and minimal to zero leakage. With the narrow mouth bottles I did find that the spout has a less tight fit, minimal leakage, etc. I did rate this product as a 4 star vs 5 for two reasons: 1. I would have personally preferred to see two separate sizes one for narrow and one for wide mouth bottle. This why the narrow mouth bottles aren’t getting the short end of the stick. Due to the fact that this is utilized by kids minimizing leakage and creating a tight secure fit is really important. 2. I would have personally preferred to purchase this item based on one individual single color versus a packet of four different colors. This set combo included two girl colors and two boy colors. Some kids are extremely picky about colors, which is very common and normal. This leads into an issue where wasted product is occurring. Due to this it does significantly decrease the cost value rating.

LOVE, LOVE, LOVE these! I am seriously considering dumping our bottle collection and buying several of these instead! My toddler loves them; they are spill free and mess free. They are easy to install and such great solid quality! They are so easy to clean and fit in my purse, his diaper bag, my pocket. I can literally take them with us wherever, whenever. I no longer need to worry about dragging around an assortment of bottles for my sons variety of beverages. If there was ever a must have product for a mom of littles, it is these!

To put it simply, it needs an air inlet valve. It's okay for kids that are only sipping. In general, this is everything it says it is! Fits on a typical water bottle (generic water bottle verified) and sports drink bottles (Body Armor verified). It will not spill and the nozzle's cap fits tight over the nozzle. I have even dropped it (for testing) and it stayed on. Also, the cap/nozzle didn't look any worse for wear after the drop since it is all a very stiff and thick silicone piece. So good on durability. The problem is the function as a drinking nozzle! As an adult I test these things to guide my kids. The vacuum force needed to drink is a bit surprising. Lightly biting the tip of the nozzle helps, similar to how you might for a camelback nozzle. From there the problem is the back pressure in the bottle. The cap doesn't have a way for air to go into the bottle as you draw on the nozzle. This causes a vacuum inside the bottle and if the bottle doesn't give, then you're gonna have a bad time. Luckily most bottles do give. Body Armor bottles don't give and it makes drinking from them like lighting a cigar though a coffee straw. So, yes, it's a great cap, but don't use it for chugging drinks like a parched athlete. Cheers!

Work really well on any kind of a water bottle a little hard to get out at first, but once it’s used a couple times it works better. It will leak a little sometimes after you used it for a while. Would be great for breast-fed babies.

returned! the entire cap is very easy to pop off the water bottle, my toddler removed the whole thing with little effort. also really difficult to drink out of, takes a lot of work fo not a lot of water

Genius idea. I always forget to bring water bottles with us for outings, but I can just throw a couple of these in the diaper bag since they have their own case to keep clean, and give water or juice to them without the possibility of it spilling everywhere while they are still learned to drink from an open bottle. The nipple size is small so it’s something familiar to them and aren’t going to get hit with an overwhelming amount of liquid at once. Works great and is easy to use!

cumplio con mis espectativas

We love these things. They're so handy to leave in the diaper bag in case we need to add a spout to a regular bottle. So far we haven't found anything it doesn't fit onto, it's pretty universal. Yes, it will come off if you pull on it or if your kid manipulates it enough. Or if you squeeze the bottle too hard. But it's more versatile than a straw, and better for the environment. We love this for traveling.

Absolutely horrendous can’t use them at all you have to bite down on the top to get any liquid out! Would not recommend!