Fabric Weights Overview

Which Weight Do I Need?

At Minus33, we offer four distinct fabric weights for all-season adventures. Which one you choose will depend on a few factors: how active you are, what the weather/temperature is doing, how easily your body gets cold/warm, and the other layers you plan to wear.

Use this chart below as a reference, but always keep in mind the changing environment.


Minus33 Fabric Weights Guide Graph

Low activity is considered little to no physical movement, such as treestand hunting, while high activity is considered constant movement, such as running or hiking.

Other layers you plan to wear can affect these temperature recommendations. This chart is based on the assumption that you are using your Minus33 within a layering system. Learn more about layering.




4 Weights. 4 Seasons. Comfort Year Round.

Each weight has its own unique benefits that you can utilize for almost any adventure. Click on each weight below to learn more about the technology behind each weight.

145 gsm

Micro

Featherlike, ultralight merino wool, great as a solo layer or as a base layer in your layering system. Micro weight is perfect for high output activities such as hiking, skiing, and training. Our Micro is made from Woolverino corespun fabric for extra durability.

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TECH SPECS


145 gsm
Jersey Knit


17.5 Microns


UPF Rating 25


Low Activity: 60+ degrees
High Activity: 75-45 degrees





170 GSM

Lightweight

Our Lightweight 100% Merino Wool is designed to be worn year round as a base layer, or as a solo piece in the spring and summer. With a UPF rating of 25, it's also great for sun protection on your next hike, ride, or climb.

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TECH SPECS


170 gsm
Jersey Knit


17.5 Microns


UPF Rating 25


Low Activity: 60+ degrees
High Activity: 60-30 degrees





235 GSM

Midweight

Our Midweight is our best selling and most versatile fabric weight. Designed as a three-season garment, our Midweight works great as either a base or mid layer. It's the perfect choice for many adventures, including colder hikes, ski trips, and hunting in the early season.

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TECH SPECS


235gsm
Interlock Knit


18.5 Microns


UPF Rating 50+


Low Activity: 60-30 degrees
High Activity: 30-0 degrees





400 GSM

Expedition

Our Expedition products are suitable for the coldest climates and true expeditions. It is one of the warmest and thickest merino wool options on the market. Hunters, mountaineers, and winter fanatics alike will all appreciate the next-level warmth of our Expedition Merino Wool.

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TECH SPECS


400 gsm
Interlock Knit


18.5 Microns


UPF Rating 50+


Low Activity: 30-0 degrees
High Activity: 0 degrees and below


Shop Expedition

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Need more help choosing a weight or product? Contact our Customer Service team for personalized advice and recommendations.

Fabric Weights Quick Comparison


WEIGHT MICRO LIGHTWEIGHT MIDWEIGHT EXPEDITION
GSM (g/m2) 145 170 235 400
Microns 17.5 17.5 18.5 18.5
UPF Rating 25 25 50+ 50+
Seasons* Summer, Spring, Fall, Winter Summer, Spring, Fall, Winter Spring, Fall, Winter Late Fall, Winter
Low Activity Temps (F)* 60+ Degrees 60+ Degrees 60-30 Degrees 30-0 Degrees
High Activity Temps (F)* 75-45 Degrees 60-30 Degrees 30-0 Degrees 0 Degrees and Below
Outdoor Activities* Hiking, Camping, Lifestyle, Running, Biking, Snowsports Hiking, Camping, Lifestyle, Running, Biking Hiking, Camping, Lifestyle, Hunting, Fishing, Snowsports Hiking, Camping, Lifestyle, Hunting, Ice Fishing, Snowsports

*Recommended, your results may vary slightly.