Drying the inside of a drysuit, especially the boots, has always been problematic and time-consuming.
It can take more than a week, and all the time there’s the possibility that mould will be growing in the damp, dark environment in which your toes are going to be placed.
It’s not possible to turn the whole suit inside-out, as the boots aren’t flexible enough. What’s needed is a way of circulating air around that area to speed up the drying process. Enter Howard F Fortescue and his little brainchild.

The Design
The TriDri Drying System is a simple fan and extendable tube set-up that slips inside the suit and circulates air around those hard-to-reach areas. It’s easy to use and quick to set up.
The small low-voltage fan is powered from a USB connector, which can run from any USB outlet or can be plugged into a mains adapter (supplied).
The fan sits inside a small base unit and passes air through a five-section telescopic yellow plastic tube, which is triangular in cross-section to add rigidity when it’s under load.
Locking pins engage as each tube is extended, and provide enough strength to support a full suit. A simple squeeze of the joint area disengages the pins and the tubes can be collapsed inside each other. They can also be taken apart for cleaning.

The Tests
I couldn’t conduct a meaningful test of the unit on my own drysuits as I’ve had them fitted with soft sock-ends for use with Rock-boots, and this would be a pointless exercise. The complete suit can be turned inside-out and dried quickly with no need for a drying aid. Secondly, the TriDri needs to rest against the inside heel part of the boot with the air directed at the toe area for it to be truly effective, and my sock-ends would just collapse, cutting off the air circulation.
I did check to see if the tubes were man enough to take the weight of a crushed neoprene suit, however. I laid the suit on the floor and extended the tubes on the TriDri, locking them all into place. I then pushed the tube into the suit and up one leg, all the way to the sock-end, after strapping the feet together with the Velcro strap that came with the kit.
I hoisted the whole lot up and rested it against a wall. The single tube took the weight without so much as a groan.
Hardly testing the drying abilities, I know. But fear not, I had just returned from a marathon pool session with 17 pairs of wet dive-boots.
“Now for a proper test,” I thought, as an evil chuckle passed my lips. I placed the device on the floor and stuck a boot on the top, ensuring that the nozzle was pointing at the toe end, plugged it in and walked away.
I expected it to take four or more hours to dry, so you can imagine my surprise when I checked it after only two to find a boot with a dry interior. Only another 33 to go!

Howard tells me that a drysuit can be dried completely with a single TriDri unit a leg at a time and takes 5-6 hours per side.
Alternatively two units can be used together to halve the time.
I reduced the drying time for the boots by placing the base of the unit on a radiator and circulating warmer air around the inside.
The TriDri actually works, and I can think of a lot of applications for it outside the diving world, such as drying wellies, trainers and waders. A fan and a tube – why didn’t I think of that

PRICE £95.50
SIZE 73cm closed, extends to 227cm
POWER Fan runs on 4.5-5.5V DC via USB
CONTACT www.tridridiving.com
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