Mens MerinoFusion Duo 300 Long Sleeve Crew Neck Top
$150.00

Composition:
Outer face
– 100% Pure Australian Merino Next to skin
– 100% Super fine Schoeller Polypropylene 18.5 micron 300gsm bi-layer knit construction
Features:
• WildernessWool™
• Slim fit
• 18.5 micron
• 300gsm bi-layer knit construction
• Gusset panel for comfort
• Raglan sleeves
• Double sewn flat seams
• Crew neck / self-fabric binding
Australian Made
Men’s MerinoFusion Duo 300 Long Sleeve Crew Neck Top
Designed for cold-weather performance and everyday comfort, the Wilderness Wear Men’s MerinoFusion Duo 300 Long Sleeve Crew Neck Top combines premium Australian Merino wool with advanced technical fibres to create a thermal base layer built for demanding outdoor conditions. Proudly Australian Made, this high-performance crew neck top delivers exceptional warmth, breathability and durability without compromising comfort next to skin.
Advanced MerinoFusion Technology
The MerinoFusion Duo 300 uses a unique bi-layer knit construction that blends the natural benefits of superfine Australian Merino wool with the durability and moisture management of Schoeller polypropylene. The result is a hard-wearing thermal fabric that feels luxuriously soft against the skin while maintaining outstanding performance in cold and active environments.
With an ultra-fine 18.5 micron Merino inner layer, this thermal top provides natural temperature regulation, moisture control and odour resistance, helping you stay comfortable across changing conditions. The polypropylene outer face improves strength, drying speed and long-term durability, making it ideal for regular outdoor use.
Built for Outdoor Performance
Featuring a slim fit design, raglan sleeves and a comfort gusset panel, the Men’s MerinoFusion Duo 300 is engineered for unrestricted movement and efficient layering. Double sewn flat seams help reduce friction and irritation during extended wear, while the 300gsm fabric weight delivers reliable insulation in colder climates.
Perfect for skiing, bushwalking, hiking, camping, sailing, cycling, running and travel, this versatile thermal base layer performs equally well as part of a technical layering system or worn casually on cooler days.
Premium Australian Made Thermal Wear
Every Wilderness Wear MerinoFusion garment is proudly Australian Made using premium quality fibres and technical knitting expertise developed for real outdoor conditions. Designed for comfort, longevity and performance, the Duo 300 is built to handle years of adventure.
Explore more performance apparel on our Instagram:
@wildernesswearaus Instagram
View the full Hybrid Baselayer range here:
Men’s & Women’s Hybrid Baselayers
| Gender | Male |
|---|---|
| Material | MerinoFusion |
| Weight | 300 Heavy |
| Fit | Slim |
| Activity | Casual/Everyday |
Sock Heights:
Sock Size Charts:
| Women’s Sock Size | US Size | EU Size |
|---|---|---|
| Small | 5-9.5 | 36-41 |
| Medium | 10-13 | 42-45 |
| Men’s Sock Size | US Size | EU Size |
|---|---|---|
| Small | 4-8 | 37–41 |
| Medium | 9-12 | 42–45 |
| Large | 13-16 | 46–49 |
Women’s Body Measurements
BUST: Measure the circumference of your chest. Place one end of the tape measure at the fullest part of your bust, wrap it around (under your armpits, around your shoulder blades, and back to the front) to get the measurement.
WAIST: Measure the circumference of your waist. Use the tape to circle your waist (sort of like a belt would) at your natural waistline, which is located above your belly button and below your rib cage. (If you bend to the side, the crease that forms is your natural waistline.)
HIP: Measure the circumference of your hips. Start at one hip and wrap the tape measure around your rear, around the other hip, and back to where you started. Make sure the tape is over the largest part of your hips.
INSIDE LEG: This is the distance from the uppermost inner part of your thigh to the bottom of your ankle. If you have a pair of pants that fit you perfectly, measure the inseam of the pants, again from the crotch to the hem.
Women’s Clothing
Women’s Tops
MEASUREMENTS (cm)
8
10
12
14
16
BUST
80-85
85-90
90-95
95-100
100-105
WAIST
70-75
75-80
80-85
85-90
90-95
HIP
80-85
85-90
90-95
95-100
100-105
Women’s Leggings
MEASUREMENTS (cm)
8
10
12
14
16
WAIST (elasticised)
65-70
70-75
75-80
80-85
85-90
HIP
85-90
90-95
95-100
100-105
105-110
INSIDE LEG
80-82
82-85
85-87
87-90
90-92
| MEASUREMENTS (cm) | 8 | 10 | 12 | 14 | 16 |
| BUST | 80-85 | 85-90 | 90-95 | 95-100 | 100-105 |
| WAIST | 70-75 | 75-80 | 80-85 | 85-90 | 90-95 |
| HIP | 80-85 | 85-90 | 90-95 | 95-100 | 100-105 |
Women’s Leggings
| MEASUREMENTS (cm) | 8 | 10 | 12 | 14 | 16 |
| WAIST (elasticised) | 65-70 | 70-75 | 75-80 | 80-85 | 85-90 |
| HIP | 85-90 | 90-95 | 95-100 | 100-105 | 105-110 |
| INSIDE LEG | 80-82 | 82-85 | 85-87 | 87-90 | 90-92 |
Men’s Body Measurements
CHEST: Measure the circumference of your chest. Place one end of the tape measure at the fullest part of your chest, wrap it around (under your armpits, around your shoulder blades, and back to the front) to get the measurement.
WAIST: Measure the circumference of your waist. Use the tape to circle your waist (sort of like a belt would) at your natural waistline, which is located above your belly button and below your rib cage. (If you bend to the side, the crease that forms is your natural waistline.)
HIP: Measure the circumference of your hips. Start at one hip and wrap the tape measure around your rear, around the other hip, and back to where you started. Make sure the tape is over the largest part of your hips.
INSIDE LEG: This is the distance from the uppermost inner part of your thigh to the bottom of your ankle. If you have a pair of pants that fit you perfectly, measure the inseam of the pants, again from the crotch to the hem.
Men’s Clothing
Men’s Tops
| MEASUREMENTS (cm) | S | M | L | XL | 2XL |
| CHEST | 85-90 | 90-95 | 95-100 | 100-105 | 105-110 |
| WAIST | 80-85 | 85-90 | 90-95 | 95-100 | 100-105 |
| HIP | 85-90 | 90-95 | 95-100 | 100-105 | 105-110 |
Men’s Leggings
| MEASUREMENTS (cm) | S | M | L | XL | 2XL |
| WAIST (elasticised) | 75-80 | 80-85 | 85-90 | 90-95 | 95-100 |
| HIP | 95-100 | 100-105 | 105-110 | 110-115 | 115-120 |
| OUTSIDE LEG | 77 | 82 | 89 |

Athletic Fit
More of a “tailored” fit that is tighter across the middle and shoulder sections in tops and tighter across the backside, upper thigh and lower leg sections in leggings.
Slim Fit
A snug, close-to-the body fit for low bulk, layering. Clothing in this style don’t have extra fabric hanging or draping anywhere.
Regular Fit
Neither snug, nor loose, these garments are worn solo or over other layers. Regular fit clothing tends to fit most body types comfortably and have a little extra fabric than slim fit.
Relaxed Fit
Relaxed refers to a fit that’s looser than regular, but not baggy. Typically, relaxed clothing provide a comfortable, looser fit.












