5.0 out of 5 stars Useful lid

J.D. · 2 June 2025

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5.0 out of 5 stars Leakproof

A.C. · 5 January 2025

So impressed with this product, it fits perfectly on my Stanley and make it 100% leakproof. The color is a little off from the purple colour on my Stanley, but that doesn’t really bother me.Good value for money, 2 lids and straws for little over £10. One of the lids has been through the dishwasher a few times and has come out fine, no adverse effects.

4.0 out of 5 stars Great but expensive

A. · 30 January 2025

Great lid. Does not leak.Have since found the same product on another website for £2 which is a huge mark up for Bolo.

5.0 out of 5 stars Leak proof.

B.T. · 12 June 2025

As described.It’s leak proof!

1.0 out of 5 stars Only work initially- better options out there.

J.H. · 11 May 2025

Started off ok. But position where the straw/lids screws into place is either just before the handle… or awkward angle the other side. Several weeks in… (wanted to give a decent run/try out) unsure whether it’s the valve but you have to fiddle with moving the straw to get a place where you can actually drink the drink. I will say they don’t leak unless tipped over 90degrees. Have purchased a different set to try from another seller that hopefully are better.

3.0 out of 5 stars Great, but watch the straws

j. · 4 March 2025

I love the fact that my coffee no longer spills, but the straws are rubbish. Only bought 2 months ago and both the straws have split at both ends

5.0 out of 5 stars Solves a very annoying issue

L.K. · 30 September 2024

I wish that this product wasn't required in the first place but since the stanley leaks so much this product is basically required if you want to put your stanley in a bag or take it anywhere that it might get knocked over. It is very comfortable to drink from and the seal is great, no longer any risk of leaking.

5.0 out of 5 stars Prevents leakage and does its job!! 😊👍✨

C. · 24 February 2025

I have a Stanley cup and this fits on it perfectly (as it probably would any other tumbler its size) I can turn my cup over without it leaking so I no longer need to worry about spilling my drink in class, not mention it looks really cute!!