Grubs TREELINE 8.5
The TREELINE 8.5 is a practical field boot designed to endure extreme cold weather conditions, keeping you comfortable in temperatures as low as -40ºC. With a layered structure of insulating and moisture-wicking materials, this boot keeps your feet warm and dry.
Key Features
- Texturised Nylon Upper Durable, water-shedding finish with camouflage print
- 5mm INSU-FOAM ULTRA + 3mm Highloft with Fleece Lining Lightweight, insulating and moisture-wicking
- 6mm NITROCELL Footbed Soft cushioning with nitrogen bubbles for insulation
- UNDERFOOT CHASSIS Ensures stability and grip
- VIBRAM® BRISTOL Outsole Lightweight, self-cleaning and provides excellent grip
- HARD TOE Technology & Reinforced Heel For protection during rugged use
- FLEECE LINING Wicks moisture and adds warmth
- Comfort Rating: -40ºC to +10ºC
SUPER-DRI Lining
Moisture-wicking lining with thousands of microfibre loops that keep the foot dry and comfortable. Paired with 5.0 INSU-FOAM ULTRA to ensure warmth without heat build-up or sweating.
HARD TOE Technology
Features epoxy-impregnated materials to stiffen and protect the toe cap, similar to those found in high-end mountaineering boots.
Size Guide
| UK Size | Boot Height (mm) | Calve Width (mm) |
|---|---|---|
| UK6 | 380mm | 410mm |
| UK7 | 385mm | 420mm |
| UK8 | 390mm | 420mm |
| UK9 | 395mm | 430mm |
| UK10 | 400mm | 430mm |
| UK11 | 405mm | 440mm |
| UK12 | 410mm | 440mm |
Note: Our Wellington boots have a 15mm allowance for wool blend/combination socks. Please order your usual size. For half-sizes, we recommend sizing down.
Care Instructions
- BRUSH ME, WASH ME: Rinse boots after each use. For a deep clean, use water and mild soap with a soft brush. Let air dry away from direct heat.
- OIL ME: Apply a rubber conditioner or natural oil once dry to maintain flexibility, especially at flex points (toe and ankle). We recommend the Revivex Rubber Care Spray available at grubswarehouse.com.









