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K. Jones
January 23, 2026
Great product to lighten the Ninja Blast, without having to carry it with the heavy base attached
I have the Ninja Blast 18 ounce and these fit perfectly. I store my Ninja on a cabinet shelf that does not have enough height to store standing up, so it’s been stored lying on its side. With these caps, each section can be stored upright.The base cap does seal well, but it will leak if it is not screwed on tightly, which will not be aligned with the shape of the base of the container. If you are a bit OCD like me, that’s a little bothersome, but I got over it because this is such a great product.Before these, transporting my Ninja Blast was heavy with the base connected. With this base cap, it is as light as carrying my Yeti.Included is a cap that covers the sharp blades when it is not in use, great protection from cutting my fingers.There is not one negative thing I can say about these, so these are definitely a five-star product.
✔ Verified Purchase
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Mary Beth B.
February 02, 2026
Don’t buy
Doesn’t fit right
✔ Verified Purchase
Must-Have for Ninja Blenders
I should have gotten one of these when I first got my ninja blender. This is a great accessory to have and solves the problem of having to carry your whole ninja blender base around while you drink your shake. I always thought it was strange the blender didn’t come with something like this. Before I’d make my drink after working out and then get a second arm workout carrying that heavy base around. Now I can attach part to my blender to protect the blades and part to my drink to take with me. It even fits in the cup holder in my car. I got the pink one and the color perfectly matches my existing package. It’s a hard sturdy but lightweight plastic and creates and drip free seal so I imagine I’ll be using this for years to come.
✔ Verified Purchase
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Nikya M.
January 07, 2026
Close
This is almost cyclist to perfect. It seals tight to the blade and the cup. The problem is that no matter how tight you screw it to the cup, it does leak a bit if you have a watery liquid. When you prepare the items for your smoothie it's fine however, if you let that milk make it to the bottom, it will drip a little.
✔ Verified Purchase
The cup base is not good. The blade cover is perfect. Mixed on its usefulness.
Ok, I clearly didn't think this product through before receiving it. For fellow dumbo's like myself, you have to turn the blender upside down with the liquid in it to install the base of the cup. I laughed when I saw the instructions in the box. And yes, I very much appreciate the instructions being included. I wish the listing included a photo of the instructions so people were aware of the process.Since you can't install it until after you use the blender and the cup's bottom is literally the motor, you have to complete turn it upside down and trust it won't come out of the lid. It didn't if your wondering. That seal worked well. I was able to install it but I was tempted to pour it into another glass, install it and then pour it back into the blender cup but realized if I poured it into a different cup, I should just drink it out of that new cup. I was laughing at myself fiddling around with this. My fault, I should have realized the process. I think part of the confusion lies in the listing calling them "replacement parts" when these parts are additions. There is no blade cover or cup bottom that comes with the ninja.Also installing the cup base is hard. It doesn't twist on fully for me and takes a lot of force. I can't get the square corners to fully align. I was honestly a little afraid I damaged the thread of my cup and ruined my blender. I had to check it after to make sure I didn't but it made nervous with how much force I had to use. I think the cup base has poor threading.The silicone seal is genius. I thought that would keep it from leaking but as soon as you tilt to drink, it does drip out. Which confirms my fears that my cup base is threaded wrong. I looked at it closing and I think it looks thicker than the threads on my motor. I do wonder if there is an issue because my blender is old. I have used this for a couple years so I wonder if the newer ones have slightly thicker threading. Since it leaks a little when tipped, im going to have to use a straw when I use this base and even then I might be nervous and drink my shake quickly lol.The cap for the blender blades fits super well though. Easy to install and works as advertised. I do like the blade cap but I don't see myself using it often.To be honest, now that I know you have to flip it to install it and it leaks anyways, it kind of makes the entire set pointless. Let's say I don't use the cup base... When am I going to need the blade cover? Its always going to be connected to the cup. Maybe if I keep the base at work and bring my cup home to clean but even then it feel unnecessary.But I'm not everyone. If you have a use for it, I recommend this for the blade cover but not for a functional cup base. They should show the instructions in the listing. If I had seen that installation requires to flip a filled cup, then I probably wouldn't have gotten this. But that's on me.5 stars for blade cover2 stars for cup base (that silicone pad is so smart and it seems to work for other people)3 stars overall
✔ Verified Purchase
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The Pink Paddler
January 10, 2026
Good Idea, Leak-Free So Far — Still Being Cautious
I wanted to like this and the reviews are good, but I’ll admit I was a bit nervous at first. I filled the blender vessel with water to test it, and it did not leak, which was reassuring.The blade cover and vessel cap are actually a really smart idea. I like having the blades covered when the cup isn’t attached — it adds an extra layer of safety and makes handling and storage feel much more secure.The parts fit well, feel solid, and the food-grade material seems good quality. I also appreciate that they’re dishwasher safe. While I’m still easing into using it, this accessory definitely helps with confidence and practicality.So far, it’s doing exactly what it’s supposed to do, and I’m glad I have it
✔ Verified Purchase
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MJPraught
December 16, 2025
Instructions unclear
First, the description has this listed as silicone and it's hard plastic. Second, I'm not really clear on how this is supposed to be used or the purpose. It fits securely enough and doesn't leak. But presumably it's purpose is to make your drink portable without bringing the base along. However, you can't disconnect the top from the base while your drink is still in the blender or your drink will spill out everywhere. It doesn't come with any instructions so you're left to infer to the ad pictures, which, as I said, appear to make the blender into a portable cup.
✔ Verified Purchase
