Review on GSI Outdoors - Coffee Rocket Maker, Blue: Brew Fresh Coffee Anywhere! by Dominique Brown

I bought this because I hate instant coffee. Boiling water is easy no matter what my hiking situation is, so I wanted something lightweight, zero-waste, simple, washable, and reusable that I can use for hiking. This little guy was perfect. The fact that it fits perfectly in the GSI cup makes me give it a 6th star. The only thing I warn people about is a) be careful of where you balance the rocket's "wings" when you put it on your mug. I haven't flipped it yet, but it feels a bit heavy when it's not right in the middle. and b) grind your own beans. Store-bought soil is very flat and significantly slows drop velocity. All in all it was a cheap and fantastic purchase.