AlpackaRaft’s whitewater deck system involves three distinct products.
The coaming (the structural frame) · the Ultralight spray skirt (replacement skirt body) · the Sixmile skirt (top-performance collaboration skirt).
Each serves a different purpose. Identify what you need before ordering.
The Three Products at a Glance
| WW Spray Deck Coaming | Ultralight Spray Skirt | Sixmile Skirt | |
|---|---|---|---|
| Role | Structural frame for the skirt | Replacement spray skirt body | Top-performance collaboration skirt |
| When to buy | Coaming is damaged or deformed | Skirt replacement or upgrade | Performance upgrade |
| Compatible decks | All WW/WR deck models (year-specific cutting required) | All WW/WR deck models (year-specific size) | All WW/WR deck models (4 tunnel sizes) |
| Weight | — | Approx. 210g | — |
① WW Spray Deck Coaming
The structural frame that holds the skirt in shape. For replacing a damaged or deformed coaming.
Each coaming is a 98-inch (approx. 250cm) PEX pipe with an aluminum ferrule on one end. Cut to the length appropriate for your spray deck’s production year.
Cut Lengths by Year
⚠️ Measure twice before cutting. There is no going back once the pipe is cut.
| Model / Year | Cut length |
|---|---|
| 2017+ WW spray deck (98 inch) | No cut required — use as-is |
| Gnu WW spray deck (including 2017 model) | Approx. 93.5 inches (approx. 237.5cm) |
| Pre-2016 Alpackalypse models | Approx. 96 inches (approx. 243.8cm) |
| Alpaca, Yak, Llama, Mule WW/WR deck (pre-2016) | Approx. 92 inches (approx. 233.7cm) |
→ WW Spray Deck Coaming — Packraft Hokkaido Web Shop
② Ultralight Spray Skirt
Replacement spray skirt body for WW deck and WR deck models — current and legacy.
Weight: approx. 210g (7.5 oz)
Variants
| Variant | Cockpit size | Compatible models |
|---|---|---|
| Standard (98″) | 98 inches | All 2017+ single-person WW deck models, all Alpackalypse models. Fits chest up to approx. 122cm. Includes 1″ elastic webbing suspenders. |
| XL (98″ — wider tunnel) | 98 inches | Same cockpit size as standard, wider tunnel. Fits chest approx. 117–132cm. Over 132cm — contact us. |
| Pre-2016 Alpaca series (92″) | 92 inches | Alpaca, Yak, Llama, Mule, Fjord Explorer with WW/WR deck, pre-2016 models. |
→ Ultralight Spray Skirt — Packraft Hokkaido Web Shop
③ AlpackaRaft × Immersion Research Sixmile Skirt
A collaboration between AlpackaRaft and Immersion Research (IR) — the highest-performance spray skirt available for packrafts.
The first bungee-style spray skirt designed for packrafting. Built as a new benchmark for performance and safety for paddlers running Grade 3–4+ whitewater, and a worthwhile investment for those beginning to explore Class 2–3 whitewater.
Key Features
Bungee-style attachment High-tension bungee drawn from kayak spray skirt design. Resists blowout in serious whitewater, while the neoprene casing maintains ease of attachment. A super-sticky silicone grip strip on the underside of the casing holds the skirt in place against cockpit rim flex.
Hybrid construction Kayak-style neoprene tunnel + 1.5mm stretch neoprene corners + hybrid TPU-coated nylon deck + full-perimeter neoprene casing. The grey 1.5mm neoprene deck panel keeps knees cool in warm conditions.
Eagle Talon grab handle (IR design) Contoured wave-profile grab handle that holds its shape and prevents hands from sliding off the edge. Essential for reliable wet exit — the Sixmile skirt requires pulling the handle to exit, which differs from other packraft skirts. Practice this before getting on the water.
Triple-reinforced seams Overlock stitch + topstitch + seam tape. Durable and quick-drying.
Sizing
Take your standard pants waist measurement and subtract 5cm. That number is your recommended tunnel size.
| Size | Tunnel circumference |
|---|---|
| Small | Approx. 71–76cm |
| Medium | Approx. 76–84cm |
| Large | Approx. 84–91cm |
| X-Large | Approx. 91–101cm |
The Story Behind It
Since introducing the first packraft whitewater deck in 2012, AlpackaRaft had kept spray skirt design focused on weight and packability. The HD skirt was a step forward — but the next step required expertise in spray skirt design that AlpackaRaft didn’t have alone. Immersion Research, who builds skirts for world-class whitewater kayakers, brought that expertise. The Sixmile skirt is the result.
→ AlpackaRaft × IR Sixmile Skirt — Packraft Hokkaido Web Shop
Which One Do You Need?
The coaming is damaged or deformed → WW Spray Deck Coaming
The skirt body is worn out and needs replacement → Ultralight Spray Skirt (confirm cockpit size and year)
You want bungee-style performance and higher watertight security → Sixmile Skirt
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