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Full-coverage tarp
Front and rear beaks for dependable weather protection -
Dual-entry
Side access for everyday use, front access when conditions call for it -
Taut pitch
Aggressive curvature and a low profile keep it taut through the night -
Compact footprint
Fits tight campsites while maintaining coverage -
Recycled materials
Tarp fabric, thread, and select webbing are made from recycled materials -
Trail weight
332g (11.7oz) for the tarp and 381g (13.6 oz) all in
Pay in installments of $5.70 with
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Shipping Estimate
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- USA
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
ocp tarp 1P Cirriform Ultralight TarpQuick specs: Tarp wt: 332g 11. 7 oz Packaged wt: 381g 13. 6 oz Pairs well with: Y zip Bug Bivy 1P Bug Shelter Get the bundled Double Wall System NOTE: Closeout Cirriforms are available here. They had too much coating applied and are heavier than stock. Description The 1P Cirriform Tarp a lightweight tarp shelter for hikers on the move The Cirriform is for hikers who want to spend most of their day, well, hiking. Whether you're a seasoned ultralight
Quick specs:
-
Tarp wt:
332g | 11.7 oz -
Packaged wt:
381g | 13.6 oz
Pairs well with:
NOTE: Closeout Cirriforms are available here. They had too much coating applied and are heavier than stock.
Description
The 1P Cirriform Tarp - a lightweight tarp shelter for hikers on the move
The Cirriform is for hikers who want to spend most of their day, well, hiking. Whether you're a seasoned ultralight tarp camper or making the jump from a freestanding tent, it delivers solid weather protection and an intuitive setup. With multiple inner options to adapt to your needs and the season, the Cirriform pitches fast, packs small, and holds its shape when the weather gets rough. It's the shelter we reach for on high-mileage days when the weather is unpredictable, and setup needs to be automatic and adaptable.
Performance
The shaped geometry and Silpoly fabric work together to keep the pitch taut through the night. Silpoly resists sagging when wet, so you're not re-tensioning at 3am. The curvature handles wind and sheds rain without requiring a perfectly flat campsite. When bugs or condensation are a factor, pair it with one of our inners to run it as a full double-wall setup.
Dual Entry
The Cirriform has two entry points, and each has a purpose. The side entry is the everyday option - easy to get in and out, and on clear nights, we love rolling it back for a view of the stars. Use the front entry to keep the sleeping area covered when weather moves in. Switching between them is as simple as moving a clip.
Pair it with an inner
The Cirriform pairs with a bivy, net-tent, or floor to create a modular double-wall shelter you can adapt to the season and conditions. We make three inners designed for it: the Y-zip Bug Bivy, the 1P Bug Shelter, and the Tub Floor. Most other brands' inners will work too. The Cirriform DW bundles the tarp with the Bug Bivy or Bug Shelter at a discount.
Trekking pole supported
Pitches with your trekking poles or tent poles. The Cirriform accommodates front poles from about 37" to 44" (94-115 cm). Poles of 26"-33" (66-84 cm) are best for the foot end, though longer poles can be adapted.
Optional pole sets are available for those who prefer to travel without trekking poles.
Notes/FAQ:
- Do I need a groundsheet or inner? That's up to you, but if you're not using an inner, you'll probably want to use a groundsheet or floor.
- Do I need to seal the seams? Tarp seams should be sealed using a sealer for silicone coated fabrics (we recommend Seam Grip +SIL by Gear Aid). Optional seam sealing service available.
Made in Vietnam and field-tested in Montana
Specifications
Cirriform Specifications
Weight
Tarp: 332g | 11.7 oz
- Tarp: 332.2g | 11.7 oz
- Rigging: 43.9g | 1.55 oz
- Stuff sack: 9.3g | 0.33 oz
- Total: 381g | 13.6 oz
Rigging Breakdown
- Reflective guyline: 28.1g | 0.99 oz
- Fastline Clip (1): 3.4g | 0.12 oz
- Tensionlock Tensioners (9): 10.2g | 0.36 oz
- Guyline Grommet (1): 2.2g | 0.08 oz
Recycled, 20D Silpoly
The Recycled 20D Silpoly fabric uses a silicone-based coating on both sides. Silpoly absorbs less water than silnylon, reducing surprise weight, while lower sag ensures the tarp stays taut through the night.
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- Weight: 40-41 gsm | ~1.2 - oz/yd2
- Hydrostatic Head: ~1800mm
- Outer face coating: Silicone-based
- Inner face coating: Silicone-based
- PFAS Free: Yes
Seam sealing: Due to the silicone coating, the seams cannot be taped and need to be manually sealed with seam sealer. You can do this yourself or use our seam-sealing service. Seam sealer is available here, and more information can be found on our Seam Sealing page.
Dimensions
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Approximate Packed size (folded):
10" x 7.5" x 2" | 25.5cm x 19cm x 5cm -
Approximate Packed size (full squish):
7" Long x 4" Diam. | 18cm Long x 10cm Diam.
Overall tarp dimensions for various pitches:
Click to enlargeHang loops
Hang loops for suspending inners are placed under each apex and near the corners. When pitched low, the loops help keep floating tub floors elevated - just run the corner lines through the loops before clipping to the tarp.
Required items (not included):
- Front Pole: About 44" - 45" (~111 - 114 cm) if pairing with the Bug Shelter or 39" - 42" (~99 - 107cm) if pairing with the Bivy
- Rear Pole: At least 31" (~79cm) if pairing with the Bug Shelter or at least 26" (~66cm) if pairing with the Bivy
- Stakes: 6 (8 for better wind stability)
Pitching
How to pitch the Cirrifrom
Start by staking out the corners of the tarp to establish your base. Raise the poles at the peaks and stake them to form the shelter's shape. Adjust and tension the lines evenly for a tight, balanced pitch.
Download our PDF pitching guide here:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
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Product Reviews
★★★★★ 5
USB ports charge.
Relatively cheap, lightweight, and better than most. It gets warm, but not hot. The Video adapter was immediately recognized by my Macbook and works flawlessly at all resolutions made available (much higher than Windows PCs) I used it both as the recipient of my 65W Mac charger, and the Mac received its power from this device; I also had the 65W Mac charger plugged directly into the Mac, and this plugged into the second USB-C plug on the mac. It works (HDMI monitor) both ways. It says that the ports are not for "charging", however be aware that they do charge when devices are connected, for example my iPhone to the extra USB-C port, or the USB-A port. My Logi back-lighted keyboard lights up too. I don't know why they say it is not for charging. Perhaps it is simply saying there are no ports expressly intended to do charging without connecting to your computer.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
High quality and all the right connection types
This works great. I've used it for both my MAC and PC. I really love the Ethernet on the end and the HDMI connections (which modern laptops don't include at times). This is a great adaptor and highly recommend.
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Reviewed in the United States on May 14, 2026
★★★★★ 4
One complaint
Works very well and solved port issues on my X1 Carbon. My only quibble is that the C interface cable from the unit to the PC is a bit too stiff and tends to lose connection if things move about.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Perfect for my use
Works as intended. Solid build quality and works with my Windows laptop through the USB C connection. I wish the product description would clarify that the USB ports do not support video.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good Buy
It's been more than a month it works great, no issues. Does not heat up, good material, compatible with both Mac and Windows, I have both OS laptops.
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Reviewed in the United States on April 29, 2026