Originally posted on Coffee Talking in April, 2015 - it is no longer available today. This is reposted for 2017 with an update that a similar version can be had from Ozark Trail.

Ozark Trail ~ Collapsible Coffee Drip/Brewer ~ Neon Green

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Sili-Dripper Silicone Collapsible Cone Coffee Filter Holder & Drip Brewer below is no longer available. But a comparible one currently available is the Ozark Trail model.

Collapsible cone saves space for drawer or backpack storage makes it easy to bring camping, or store at the office.
One simple, durable part is easily cleaned in the sink and is dishwasher safe.
Brew delicious, home-made, drip brew coffee without expensive equipment.
Easily use this single cup coffee maker while sitting beside the campfire.
Carabiner included to make it easy to attach to your backpack or belt loop.

One of the FYI details I found while researching is that with very hot coffee and a level surface to the mug below, it can produce a tight seal, which slows down the dripping. Some people cut a tiny hole in the base so an air pocket cannot form between the mug and silicone brewer. Another person mentioned they put a straw through one of the drip holes to allow air to flow and therefore the coffee to drip through. Pour about 1/3 of your water, wait for the bloom, then slowly pour the rest through for a drip style brewed fresh cup of coffee. The amount of cups you make is based on how much coffee grounds you put in your brew filter. Works best with a #2 filter like these from Melitta.-