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Men's Wilderness Expedition Heavyweight 1/4 Zip – 100% Merino Wool
When the work needs doing, this heavyweight 1/4 zip won't let the weather slow you down. Built from 380 GSM Ponte de Roma merino wool, it's tough enough for bushwhacking and wood chopping yet comfortable enough for everyday wear. The YKK quarter-zip makes it easy to vent when you heat up, and thumbholes keep your sleeves in place and your hands warmer when temperatures drop. From the trail to the office, it's made to move with you.
Why You'll Love This 1/4 Zip:
Ponte de Roma is a double-knit technique that creates incredibly durable, stretchy fabric—twice as tough as single-layer construction without adding bulk. Yoked shoulders keep seams off your shoulder line so pack straps sit comfortably during long carries. The chest pocket secures small essentials, while the YKK semi-auto locking zipper stays put when you set it. The zipper garage protects your chin from cold metal and fabric pinching. At 15.2 oz (size L), this is serious insulation that performs in the harshest conditions while still looking sharp enough for the office.
Why 100% Merino?
Pure Australian merino regulates temperature naturally—keeping you warm when you're sitting still and breathing when you're working hard. The fiber's legendary odor resistance means you can wear this layer day after day without washing, and moisture-wicking keeps you dry even during high-exertion activities. Unlike synthetic fleece that traps odors and melts near flames, merino stays fresh and is naturally fire-resistant. UPF 50+ protection adds sun safety during those long days above treeline.
Size & Fit:
Regular fit with room to layer a base layer underneath—not too tight, not too baggy. Runs true to size.
| Size | Chest | Waist |
|---|---|---|
| S | 35-37" | 29-31" |
| M | 38-40" | 32-34" |
| L | 41-43" | 35-37" |
| XL | 44-46" | 38-40" |
| 2XL | 47-49" | 41-43" |
Care Instructions:
Machine wash cold on gentle cycle, tumble dry low. Use Nikwax Wool Wash or mild detergent. Turn inside out before washing. Never use fabric softener or bleach. Store in an airtight container to protect from moths during off-season.
Complete Your Look:
Layer over a midweight crew or henley for extreme cold, or wear directly over a microweight base layer for active pursuits. Browse our full merino wool collection for the complete Wilderness Expedition line.
When the work needs doing, this heavyweight 1/4 zip won't let the weather slow you down. Built from 380 GSM Ponte de Roma merino wool, it's tough enough for bushwhacking and wood chopping yet comfortable enough for everyday wear. The YKK quarter-zip makes it easy to vent when you heat up, and thumbholes keep your sleeves in place and your hands warmer when temperatures drop. From the trail to the office, it's made to move with you.
Why You'll Love This 1/4 Zip:
Ponte de Roma is a double-knit technique that creates incredibly durable, stretchy fabric—twice as tough as single-layer construction without adding bulk. Yoked shoulders keep seams off your shoulder line so pack straps sit comfortably during long carries. The chest pocket secures small essentials, while the YKK semi-auto locking zipper stays put when you set it. The zipper garage protects your chin from cold metal and fabric pinching. At 15.2 oz (size L), this is serious insulation that performs in the harshest conditions while still looking sharp enough for the office.
Why 100% Merino?
Pure Australian merino regulates temperature naturally—keeping you warm when you're sitting still and breathing when you're working hard. The fiber's legendary odor resistance means you can wear this layer day after day without washing, and moisture-wicking keeps you dry even during high-exertion activities. Unlike synthetic fleece that traps odors and melts near flames, merino stays fresh and is naturally fire-resistant. UPF 50+ protection adds sun safety during those long days above treeline.
Size & Fit:
Regular fit with room to layer a base layer underneath—not too tight, not too baggy. Runs true to size.
| Size | Chest | Waist |
|---|---|---|
| S | 35-37" | 29-31" |
| M | 38-40" | 32-34" |
| L | 41-43" | 35-37" |
| XL | 44-46" | 38-40" |
| 2XL | 47-49" | 41-43" |
Care Instructions:
Machine wash cold on gentle cycle, tumble dry low. Use Nikwax Wool Wash or mild detergent. Turn inside out before washing. Never use fabric softener or bleach. Store in an airtight container to protect from moths during off-season.
Complete Your Look:
Layer over a midweight crew or henley for extreme cold, or wear directly over a microweight base layer for active pursuits. Browse our full merino wool collection for the complete Wilderness Expedition line.