MYOG No. 7 – Flat tarp 2 person ultralight

Spacious 2 person tarp on the Loowit Trail
Spacious 2 person tarp on the Loowit Trail

GEAR: Flat 2-person ultralight tarp

WEIGHT: 10 ounces including 10 titanium stakes

DIMENSIONS: 9′ x 10.5′

COST TO MAKE: $210 (shared components with solo tarp poncho)

USE: As an ultralight 2 person shelter in dry to mild conditions

WILL I USE IT?: Yep. I have and I will continue to use it

I love my solo tarp-poncho, but what about when I want to camp with my man? That’s what this amazing, insanely light 2 person tarp is for! It’s simple, easy, versatile, super ultra light weight and compact. It weighs a measley 10 oz included stakes and guy lines.

Interior shot
Interior shot

I designed and constructed the flat tarp with 0.34 oz/sqyd Cuben Fiber (tarp body), single sided cuben fiber tape and double sided cuben fiber tape (reinforcement), 1.43 oz/sqyd Cuben Fiber adhesive material (tie outs), D-rings and mittenhooks (removable tie out hardwear), zline 1.25 mm spectra cord and micro line loc guy line adjusters (guy lines), single sided cuben fiber tape and double sided cuben fiber tape (reinforcement), and titanium ultralight tent stakes. I was able to reuse the guy line components I constructed for my solo tarp poncho.

Smooth setup
Smooth setup

I cut the cuben to length and attached the two pieces together lengthwise using double sided cuben tape and stitching with polyester thread for strength, then added single sided cuben tape for waterproofing.

I designed the tie outs for maximum strength. The tie outs were cut by hand with rounded edges to minimize strain. The tarp corner is sandwiched between two offset layers of cuben on either side. Tie outs are reinforced with polyester stitching. I incorporated D-rings for guy line removability. Guy lines clip to D rings on tie outs with mitten hooks.

How does it compare to commercially available gear? Zpacks sells rectangular tarps comparable in size for $255-$275 ($50-$65 more than it cost to make this one), although the tarps available are in a thicker 0.5 oz/sqyd cuben fiber.

The tarp in all her glory
The tarp in all her glory

How does it perform? Great!

Jared and I have used the tarp on the Wonderland Trail around Mt Rainier and on the Loowit Trail around Mt St Helens. The tarp has yet to experience rain, thanks to the dry Northwest weather. But so far it’s a success! It is incredibly spacious and more than roomy enough for the two of us and our gear. It gives us shelter when we need some buffering from the elements (we’re certain an elk came into our camp one night, but thanks to the tarp it did not stomp on us) and could be used in drizzly conditions.

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MYOG No. 6 – Cuben Fiber Tarp/Poncho

Set up in VT rains
Set up in VT rains

GEAR: Cuben Fiber Tarp Poncho

WEIGHT: 7.9 ounces including stakes

DIMENSIONS: 54″ x 108″ (1.5 yds x 3 yds)

COST TO MAKE: ~$200

WILL I USE IT?: I have and I will continue to. So far used in VT and WA. I will continue to use it on my solo ultralight adventures.

I needed a shelter for my Long Trail thru hike, so why not make a bomber super ultralight shelter/poncho to save as much weight as possible?

Set up on a boulder at Colchuck Lake in the Enchantments
Set up on a boulder at Colchuck Lake in the Enchantments

Instead of carrying my 7 oz rain jacket – which is great and very light and waterproof (the Patagonia M10) PLUS a 1 lb+ shelter, I can carry my tarp/poncho which weighs in at 7.9 oz INCLUDING stakes. Plus, it kind of looks like an octopus suit – with a opaque blue hooded portion and translucent body – which, let’s face it, is awesome.

I wanted an absurdly ultralight shelter that I could use to sleep under and use as waterproof breathable rain gear while hiking. There are a few products on the market that are similar (e.g., Zpacks Micro Ground sheet $175 – a ground sheet not shelter mind you, MLD Cuben Fiber Poncho $175 – no breathable portion, Six Moon Designs Gatewood Cape $110 – silnylon).

Interior view
Interior view

The tarp/poncho was made using 0.51 oz/sqyd cuben fiber (tarp body), 1.62 oz/sqyd “Challenger” Waterproof Breathable Cuben Fiber-eVent (breathable hood/chest), 1.0 oz/sqyd cuben fiber (tie outs), D-rings and mittenhooks (removable tie out hardwear), zline 1.25 mm spectra cord and micro line loc guy line adjusters (guy lines), single sided cuben fiber tape and double sided cuben fiber tape (reinforcement), and titanium ultralight tent stakes.

Tie outs are designed for strength
Tie outs are designed for strength

I drew up the layout and made tests using Tyvek. I cut a large hole in the 0.5 cuben for the breathable portion and hood. The waterproof breathable portion was designed to allow heat and moisture escape the body of the poncho around the chest, head, and neck while hiking hard and exerting maximum energy. I made the hood using Challenger waterproof breathable cuben fiber eVent fabric, taped seams, and added drawcord and cord lock then fitted fitted the two pieces (tarp and poncho) together – adhered with double sided cuben tape, sewn with polyester thread, and taped with single sided cuben tape for waterproofing.

I designed the tie outs for maximum strength and durability. Much thought went into optimum design in order to minimize stress and strain in one seamless, edgeless single piece of cuben fiber. I wanted to avoid several pieces of fabric which would compromise the cuben strength by breaking the long strands of dyneema thread. I also wanted to avoid sharp edges and corners which could create weak spots in the piece. The tie outs were laser cut for seamlessness and cut with rounded edges to minimize strain. The tarp corner is sandwiched between two offset layers of cuben on either side. Tie outs are adhered to tarp corners and edges with double sided cuben tape and reinforced with polyester stitching. Ideally the tie outs would be adhered rather than taped, however, due to adhesion difficulties I opted to adhere with strong double sided cuben tape instead. I incorporated D-rings for guy line removability. Guy lines clip to D rings on tie outs with mitten hooks.

Cinching the hood
Cinching the hood

How does it perform? Perfectly!

The tarp is just big enough to fit 5’2″ me underneath on my Thermarest and sleeping bag. So, it’s cozy. But it works like a charm. Thus far I have used the tarp on camping adventures in the Washington Enchantments and on the Vermont Long Trail.

I used the tarp as shelter in soaking, humid Vermont rain and amazingly stayed dry. I cinched the hood closed and had no problems with water dripping in.  Backsplash was surprizingly minimal, considering the tarp does not come all the way to the ground but instead leaves a several-inch gap (bigger at the head tapering to the feet). I also used an ultralight umbrella over the front opening of the a-frame for added rain protection, which I would continue in future rains, particularly in windy rainy conditions. The breathable eVent portion seemed to allow more moisture through the fabric pores which left the surface of the center of my sleeping bag damp after 8-10 hours overnight in steady rain – which I noticed but did not affect the sleeping bag performance even with the high humidy/inability of anything to dry. This is not a deal breaker, but something to keep in mind especially in cold and rainy conditions.

It holds up in VT rains
It holds up in VT rains

When used as a poncho, it also works great. The poncho is big enough to go over and around my pack, and longer in front so when walking through wet brush and overgrown trail I stay dry. I wore the poncho in Vermont rains and stayed dry when possible (however, I also got wet in sideways wind and driving rain, but I’d expect to get wet in any rain jacket in those conditions). The waterproof breathable portion kept me from overheating and oversweating. Also as a plus I don’t have to worry about rain pants because the poncho covers my legs or about a pack cover because the poncho goes around my pack.

Overall: the Cuben Fiber Tarp/Poncho is an excellent piece of minimalist lightweight gear. The design and production went great. It performs well as both a tarp and a poncho (and pack cover!). And there are so many ounces of savings. A resounding success.