Chaser Skull Cap

Fabric Guide Size Guide

Accessories Size Chart


All sizes are given in US Sizing 

Men's Women's
S 4 - 6 5.5 - 7.5
7 - 10 8.5 - 11.5
L 11 - 14 12 - 15.5

Pace arm warmers

Measurement given for bicep width and arm warmer length. Measure around the fullest part of your upper arm in a relaxed position. 

Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.

Approximate measurements only. 

Bicep Arm Warmer Length
XS 27 - 28 cm 45 cm
S 29 - 30 cm 46.5 cm
31 - 32 cm 48 cm
L 33 cm + 49.5 cm


Hand Length - Measure from the top of your middle finger to the base of your hand. 

Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.

Chaser Gloves:

S/M 16.5 cm
L/XL  18.5 cm 

Pace Gloves:

S 16.5 cm
18.5 cm 
L 20.5 cm

Skull Cap

To measure your head circumference, take a sewing measuring tape and wrap around your head so that the measuring tape winds just above the ears, in the middle of your forehead and in the centre back of your head.

Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. Approximate measurements only.

Head circumference
S/M 50-60 cm
M/L  60-70 cm 

For further assistance with sizing, contact us here.

or make 4 interest-free payments of $8.75 fortnightly with More info


The Chaser Skull Cap gives you streamlined warmth when you’re on the go. It’s all lightweight comfort and warmth, and no bulk. Wear it on its own or under a helmet when you’re on your bike or on the slopes without risk of overheating.

This Merino Skull Cap has a nice stretch courtesy of the 4% Elastane added so it will sit snugly, but comfortably on your head. It’s long enough to cover your ears when it’s really cold, or you can pull it up as you warm up to get some extra air. The fully breathable fabric provides warmth, without making your head sweaty or overheats like most synthetics. Of course, when you work up a sweat when you’re on the go you'll still stay warm and comfortable, and will not freeze, no matter how cold it gets outside. Plus, it’s so lightweight you’ll hardly even know you’re wearing it.

An all-round awesome accessory to add to your collection of ioMerino garments to help keep you warm and comfortable through all sorts of conditions. 

240gsm Mid Weight

96% superfine Australian Merino

4% Elastane

MicroMerino®  Fabric. 



Customer Reviews

Based on 13 reviews
Gary Judge (Kiama, AU)
warm and comfortable

an excellent cap - goes great under the ski helmet!

Steven Atherton (Adelaide, AU)
Chaser Skull Cap

Excellent, keeps my noggin warm on long winter runs

Teyla Grace (Adelaide, AU)
Chaser skull cap

Super lightweight but warm. Would be nice in another colour.

geoff Duke (Brunswick, AU)
Chaser Scull cap

Really warm and super thin to go under a helmet. very happy and can see it will get a lot of use

z (Sydney, AU)
Very warm but.......

This cap is very warm and very light. You could easily keep it in your pocket when not in use. But and this is a big but if you keep your hair in a ponytail or bun the hat will not stay put it rises up and I have the largest size and a 58cm head. It makes it frustrating just walking around and having to constantly pull the cap down. Other than that this cap is well worth the money.

Lizzie (Ballarat, AU)
Go for large if you have long hair.

So thin and light weight. Adds no weight at all to compulsory trail running gear. I usually have trouble getting these kind of beanies to stay put (they usually ride up with my long hair), but the size large seems to stay put and just covers the tops of my ears.


Fabric Guide

While Merino is an amazing natural fibre, not all Merino fabrics are created equal. At ioMerino, we make our own fabrics, using only the best quality fibres, and to very specific specifications that make the most of the natural benefits of Merino. All of them are 'Merino rich’. No cheap blends passed off as Merino. No cheaper scratchy fibres or synthetic substitutes to save money. No unethical production. And each fabric is made for a specific purpose. So if you see something with a small amount of elastase or nylon added, you can be sure it absolutely needs to be there to enhance the natural stretch and durability. 

It took every bit of our 140 years of experience in the wool industry to perfect our fabrics, but we think you’ll agree the end result was more than worth the effort.

Ethically Made. Ethically Sourced. Perfectly Natural. 


Altitude / Zodiac

Lightweight 170gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Ultra / Universal

Lightweight 160gsm 83% Australian Merino Wool blended with 12% nylon blended for extra durability and 5% Elastane for stretch and comfort.



Midweight 265gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Summerino - Celsius 

Made from 45% ultra fine MERINO (Ultra Lightweight 150gsm), 45% natural TENCEL (made from sustainably grown wood fiber), and 10% nylon for extra durability. 


Summerino - Keystone 

Ultra Lightweight 150gsm 100% Australian Merino Wool. A MicroMerino® Fabric. 


Merino Compression

Midweight 280gsm 76% Australian Merino Wool, 15% Elastane and 9% Nylon for extra stretch and compression properties.



Ultra lightweight ribbed 155gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Outer Weight 280gsm Fleece 100% Australian Merino Wool. MicroMerino®  Fabric. 



Midweight 260gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Midweight 260gsm waffle texture 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Stride / Glacier / Velocity

Midweight 255gsm French Terry 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Natural Merino Wool benefits: