From Discerning Cyclist:
The Handlestash can be easily attached to your bike handlebars thanks to it’s quick-release clamp. But if you’re worried about it getting nicked, then it also comes with a secure bolt which you can use instead.
But where Handlestash gets really interesting is how it holds drinks securely in place. Well, I say “securely”, but in a way it’s the opposite.
The opening of the Handlestash is 8.2cm (3.25”) in diameter, but it is extremely adaptable in what it can hold. The surrounding container is made from built-in elastic, so it can easily adapt to cups or bottles of many sizes. Bigger, heavier bottles will sit deeper than a small cup, keeping them more secure.
And aside from the rigid opening, the rest of the Handlestash moves freely, which – counterintuitively – reduces the risk of spillage.
Read the full review on discerningcyclist.com: