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

Fits on most bottles, even wide mouth juice/gatorade bottles. Easier than bringing along a sippy cup. Each one comes with a carry case. Leak proof and easy to put onto bottles. Easy to clean. I always have one ready to go in the diaper bag.

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!

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.

I bought these for my granddaughter who is almost 2. Product itself was a great concept, but the first time I put the lid on the bottle, she immediately removed it and spilled the entire bottle of water.

These are perfect for on the go with toddlers. They are convenient and easy to clean. You can throw it in your purse and it fits most drinks.

As a mom, this saved me from nonstop spills and tantrums. These toppers turn almost any bottle into a sippy in seconds. Comes with four + carrying cases — perfect for travel, diaper bags, or quick trips. My toddler finally feels included when I’m sipping something, and I don’t have to worry about the mess. Game changer!

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!

Innovation of the year!! When traveling with a toddler this solves all problems. Baby also loves to play with it (put the cap on and off). Was introduced at 12 months old and was able to drink from it after 2 or 3 attempts. Dishwasher safe