PETT2GO | Layer Right for Every Dog -Dog Layering System Outdoor

From Human Outdoor Science to Canine Comfort

How the mountaineer’s three-layer system inspired PETT2GO’s design for dogs who live to move.

🏔️ 1. The Science of Layering — Born in the Mountains

Before “outdoor gear” became a lifestyle category, it was survival equipment.
Mountaineers in the 1970s — facing wind, snow, and rapid temperature shifts — learned that comfort wasn’t about thicker clothing, but smarter layering.

Outdoor pioneers like Patagonia, Arc’teryx, and The North Face built their technical apparel systems on a three-layer theory:
each layer serves a function — moisture management, insulation, and weather protection.

Layer	Function	Common Material	Example
Base Layer	Wicks sweat, keeps skin dry	Merino wool, polyester mesh	Patagonia Capilene®
Mid Layer	Traps body heat	Fleece, synthetic loft	Polartec® Alpha®, R1®
Shell Layer	Shields from wind and rain	2.5L–3L laminated fabrics	Arc’teryx Beta AR, TNF Futurelight™

These layers work together to maintain thermal balance:

• When moving, heat and moisture escape through breathable fabrics.
• When resting, insulation prevents body heat from dropping.
• The shell forms a final barrier against wind and water.

📚 Source: American Alpine Institute, “Mountaineering Clothing Systems Explained” (2020); Arc’teryx Product Science Archives (2022); Polartec® Thermal Regulation Whitepaper (2019).

🧠 2. Why Dogs Need the Same Logic

Dogs may not climb peaks, but they face similar challenges — cold rain, gusty wind, or fluctuating humidity during walks and hikes.
Yet most “dog clothes” are designed as single-purpose garments: cute, thick, or waterproof — rarely all three in balance.

PETT2GO’s designers asked:

“What if we treat dogs like real outdoor athletes — and give them the same science humans rely on?”

The result was the PETT2GO Layer System — inspired by the proven human 3-layer model, but adapted for the way dogs move, run, and regulate heat.

🐶 3. Translating the Human 3-Layer System to Dogs

Dogs already have a built-in base layer — their coat.
Depending on breed, that layer can behave like a natural fleece or merely a thin mesh.
So PETT2GO focused on optimizing the mid and shell layers that surround it.

PETT2GO Layer	Human Equivalent	Function	Key Material
Dog’s Coat (Natural Base)	Base Layer	Natural insulation & moisture control	Hair density varies 60,000–180,000 hairs/in² (source: VetDerm Europe, 2021)
Motion Fleece Vest	Mid Layer	Adds warmth, reduces heat loss, wicks body vapor	4-way stretch fleece, CLO 0.7–0.8
Breathable Raincoat / Windbreaker	Shell Layer	Protects from rain, wind, mud	2.5-layer PU lamination or DWR-treated nylon

🌡️ 4. The Physiology Behind the Design

Scientific studies show that short-haired or single-coated dogs have significantly higher body surface temperatures (BST) — 31.7 ± 0.19 °C compared to 28.2 ± 0.23 °C in double-coated breeds, meaning they lose heat faster in cold environments.
(Source: MultisensorAI Canine Thermography Report, 2024; Journal of Veterinary Behavior, Vol. 52, 2023.)

Furthermore, when a dog’s fur becomes wet, its insulation efficiency drops by up to 30%, similar to how wet down loses loft.
(Source: Purdue Extension Veterinary Report VA-16-W, 2019.)

Therefore, PETT2GO’s system starts from temperature regulation, maintaining a dog’s body heat in cold environments by insulating against damp and chill while retaining warmth.

🧵 5. The Textile Engineering Difference

To achieve the same balance of breathability, protection, and stretch found in human gear, PETT2GO partnered with Taiwan’s functional textile experts, which also supply professional outdoor brands.

• 2.5-Layer PU Lamination (Shell):
  Waterproof 10,000 mm / Breathable 20,000 g/m²/24 hrs
  (JIS L 1092 & 1099 certified)

• DWR Windbreaker Fabric (Shell Light):
  windproof, Water resistant (AATCC35)

• 4-Way Stretch Fleece (Mid Layer):
  Anti-static, warmth-to-weight ratio optimized for mobility

Every jacket undergoes real movement mapping with 30+ dog breeds, ensuring that protection never compromises motion.

📚 Sources: Taiwan Textile Research Institute Functional Fabric Standards (2023); SGS Taiwan Lab Report JIS L 1099:2023.

🌧️ 6. The 2 + 1 System Explained

Dogs regulate body heat primarily through respiration and paw pads, not skin sweating — so breathability and fit are critical.
The PETT2GO Layer System simplifies the human concept into a modular format:

1. Shell (Raincoat / Windbreaker) – Blocks wind and moisture
2. Mid Layer (Fleece Vest) – Adds warmth for cold or aging dogs
3. Natural Coat (Base) – Always present, varies by breed

This structure allows owners to “build up” or “strip down” protection just like outdoor athletes do — achieving optimal comfort across Taiwan’s humid winters or Europe’s unpredictable spring rain.

🧭 7. Real-World Performance

Field-tested across Taipei, Shanghai, and Seattle, the PETT2GO system maintained canine core warmth within a 2.5 °C variance across environments from 5 °C to 22 °C.
Short-haired breeds wearing both fleece + shell stayed dry and active for 4 + hours in moderate rain, while long-haired breeds wearing shell only maintained stable thermal readings when fur remained dry.
(PETT2GO Internal Field Report, 2024.)

🐾 8. From Human Theory to Canine Freedom

Human outdoor science taught us: comfort is dynamic, not static.
PETT2GO’s mission is to bring that same intelligence to dogs — because every walk, trail, and drizzle deserves the right gear system.

Layer Right for Every Dog. Move Freely in Every Season.

📚 References

1. American Alpine Institute, “Mountaineering Clothing Systems Explained” (2020)
2. Polartec®, Thermal Regulation and Moisture Management Whitepaper (2019)
3. MultisensorAI, Quantifying Body Surface Temperature Differences in Canine Coat Types (2024)
4. Purdue University Extension, Canine Temperature Management Report VA-16-W (2019)
5. VetDerm Europe, Canine Hair Density Study (2021)
6. Taiwan Textile Research Institute, Functional Fabric Performance Standards (2023)
7. PETT2GO Internal Field Test Report (2024)

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