Click here to learn more about our different fits and how to choose the size that's right for you.
We strive to make all our products true to size. The sizing charts below are general and not garment specific, but hopefully, it will give you some guidance when choosing your size. In instances where you’re perhaps in between two sizes then take a look at our recommendations below.
For further assistance with sizing, contact us here.
If for some reason you are not 100% satisfied with the size you chose, we’ll happily offer an exchange, refund or store credit on any non-sale garments. For more about our refunds and exchange policy, click here.
|
|
XS |
S |
M |
L |
XL |
XXL |
Waist |
Inch |
27 |
28-30 |
32-34 |
36-38 |
40-42 |
44-46+ |
|
cm |
68 - 70 |
71-76 |
81-86 |
91-96 |
101-108 |
111-116+ |
Chest |
Inch |
32-34 |
34-36 |
38-40 |
42-44 |
46-48 |
50+ |
|
cm |
81.5 - 86 |
86-91 |
96-101 |
106-111 |
116-121 |
127+ |
Measurements in cm.
Measurements include ribbed hem.
Sleeve length from pit to hem.
XS |
S |
M |
L |
XL |
XXL | |
Pit to pit |
47.4 |
51.2 |
55 |
58.8 |
62.6 |
66.4 |
Torso Length |
65.9 |
68.5 |
71 |
73.5 |
76.1 |
78.6 |
Sleeve Length |
50.2 |
52.1 |
54 |
55.9 |
57.8 |
59.7 |
Measurements in cm.
Measurements include ribbed hem.
Sleeve length from shoulder to cuff.
XS |
S |
M |
L |
XL |
XXL | |
Pit to pit |
49.4 |
53.2 |
57 |
60.8 |
64.6 |
68.4 |
Torso Length |
68.9 |
71.5 |
74 |
76.5 |
79.1 |
81.6 |
Sleeve Length |
74.2 |
76.1 |
78 |
79.9 |
81.8 |
83.7 |
Outside Leg measurement (including waist band).
S | M | L | XL | XXL | ||
Inside Leg | inch | 29 | 30 | 30.5 | 31 | 31.5 |
cm | 74.5 | 76 | 77 | 78.5 | 80 | |
Outside Leg | inch | 41 | 41.5 | 42 | 42.5 | 43 |
cm | 105 | 106 | 107.5 | 109 | 110 |
Outer leg length measure from top of waist to ankle.
Measurements in cm.
XS | S | M | L | XL | XXL | |
Waist | 58.9 | 64 | 69.1 | 74.2 | 79.2 | 84.3 |
Hips | 68.9 | 74 | 79.1 | 84.2 | 89.2 | 94.3 |
Outer Leg | 90.3 | 93.5 | 96.7 | 99.8 | 103 | 106.2 |
Leg length measurement includes ankle cuff.
XS | S | M | L | XL | XXL | |
Waist | 70.4 | 75.2 | 80 | 84.8 | 85.6 | 94.4 |
Hips | 82.4 | 87.2 | 92 | 96.8 | 101.6 | 106.4 |
Leg Length | 81.6 | 82.3 | 83 | 83.7 | 84.4 | 85.1 |
XS |
S |
M |
L |
XL |
|
Australian |
6-8 |
8-10 |
10-12 |
12-14 |
14-16 |
US |
2-4 |
4-6 |
6-8 |
8-10 |
10-12 |
European |
34-36 |
36-38 |
38- 40 |
40-42 |
42-44 |
The Altitude range is designed to be a tight, but comfortable, fit. If you size up it will give you a little extra room, but it will still hug your body as that’s what this range is designed to do. If you want a looser fit consider the Ultra or Universal range.
XS | S | M | L | XL | XXL | ||
Bust | inch | 30-32 | 32-34 | 34-37 | 37-40 | 40-42 | 42-45 |
cm | 76-82 | 82-88 | 88-94 | 94-100 | 100-107 | 108-114 | |
Waist | inch | 24-26 | 26-28 | 28-30 | 30-32 | 32-35 | 35-38 |
cm | 58-64 | 64-70 | 70-76 | 76-82 | 82-89 | 89-96 | |
Hips | inch | 34-36 | 36–38 | 38-40 | 40-42 | 42-44 | 44-47 |
cm | 84-90 | 90-96 | 96-102 | 102-108 | 108-115 | 115-122 |
These garments are designed true to size, but going up a size in the Ultra will give it a slightly looser fit, whilst remaining sporty. The Universal and Horizon are already designed as a more casual fit.
XS | S | M | L | XL | XXL | ||
Bust | inch | 29.5–32.5 | 32.5–35.5 | 35.5–38 | 38–41 | 41–44.5 | 44.5–48.5 |
cm | 75-82.5 | 82.5-90 | 90-96.5 | 96.5-104 | 104-113 | 113-123 | |
Waist | inch | 23.5–26 | 26–29 | 29–31.5 | 31.5–34.5 | 34.5–38.5 | 38.5–42.5 |
cm | 60-66 | 66-73.5 | 73.5-80 | 80-87.5 | 87.5-94.5 | 97.5-108 | |
Hips | inch | 33–35.5 | 35.5–38.5 | 38.5–41 | 41–44 | 44–47 | 47–50 |
cm | 83.5-90 | 90-97.5 | 97.5-104 | 104 -111.5 | 111.5-119.5 | 119-127 |
Measurements in cm.
Measurements include ribbed hem.
Sleeve length from pit to hem.
XS |
S |
M |
L |
XL |
XXL | |
Pit to pit |
41.4 |
45.2 |
49 |
52.8 |
56.6 |
60.4 |
Torso Length |
60.5 |
63 |
65.5 |
68.1 |
70.6 |
73.2 |
Sleeve Length |
47.9 |
50.5 |
53 |
55.5 |
58.1 |
60.6 |
Measurements in cm.
Measurements include ribbed hem.
Sleeve length from shoulder to cuff.
XS |
S |
M |
L |
XL |
XXL | |
Pit to pit |
44.4 |
48.2 |
52 |
55.8 |
59.6 |
63.4 |
Torso Length |
62.9 |
65.5 |
68 |
70.5 |
73.1 |
75.6 |
Sleeve Length |
68.2 |
70.1 |
72 |
73.9 |
75.8 |
77.7 |
Measurements do not include the ankle cuff.
Please keep in mind the style of these pants is slightly drop crotch.
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL | |
Waist |
72.4 |
77.2 |
82 |
86.8 |
91.6 |
96.4 |
Hip |
98.2 |
104 |
108.8 |
113.6 |
118.4 |
123.2 |
Leg Length |
56.4 | 57.6 | 58.8 | 60 | 61.2 | 62.4 |
Measurements in cm.
Outer Leg Length includes from the top of the waist to the bottom of the pant leg.
XS |
S |
M |
L |
XL |
XXL | |
Waist 1/2 measurement |
34 |
36.5 |
39 |
41.5 |
44 |
46.50 |
Hip 1/2 measurement |
40 |
42.5 |
45 |
47.5 |
50 |
52.5 |
Outer Leg Length |
106.8 | 108 | 109.2 | 110.4 | 111.6 | 112.8 |
Outside leg measurement includes waist band.
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL |
|
Waist |
68.4 |
73.2 |
78 |
82.8 |
87.6 |
92.4 |
Hip |
94.4 |
99.2 |
104 |
108.8 |
112.6 |
118.4 |
Outside Leg |
95.6 |
96.8 |
98 |
99.2 |
100.4 |
101.6 |
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL | |
Waist |
72.4 |
77.2 |
82 |
86.8 |
91.6 |
96.4 |
Hip |
98.2 |
104 |
108.8 |
113.6 |
118.4 |
123.2 |
Leg Length |
60.5 | 63 | 65.5 | 68.1 | 70.6 | 73.2 |
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL | |
Waist |
72.4 |
77.2 |
82 |
86.8 |
91.6 |
96.4 |
Hip |
98.2 |
104 |
108.8 |
113.6 |
118.4 |
123.2 |
Leg Length |
60.5 | 63 | 65.5 | 68.1 | 70.6 | 73.2 |
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL | |
Waist |
72.4 |
77.2 |
82 |
86.8 |
91.6 |
96.4 |
Hip |
98.2 |
104 |
108.8 |
113.6 |
118.4 |
123.2 |
Leg Length |
42.2 | 44.8 | 47.3 | 49.8 | 52.4 | 54.9 |
Measurements in cm.
XS |
S |
M |
L |
XL |
XXL | |
Waist |
72.4 |
77.2 |
82 |
86.8 |
91.6 |
96.4 |
Hip |
98.2 |
104 |
108.8 |
113.6 |
118.4 |
123.2 |
Leg Length |
10.5 | 13 | 15.5 | 18.1 | 20.6 | 23.2 |
All sizes are given in US Sizing
Men's | Women's | |
S | 4 - 6 | 5.5 - 7.5 |
M | 7 - 10 | 8.5 - 11.5 |
L | 11 - 14 | 12 - 15.5 |
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 |
M | 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 the palm.
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.
Pace Gloves:
S | 16 cm |
M | 18 cm |
L | 20 cm |
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 $27.50 fortnightly with More info
Not sure what you’re doing today? The Universal Long Sleeve Top is a perfect choice and is designed to suit all levels of activity and weather conditions.
It may look like a regular, casual, long sleeve top, but it is a genuine high-performance merino layer in disguise. Perfect for everything; from an easy day travelling, right through to high-intensity activities. Wear it on its own in warm or cool weather, or as part of your layering system when the temperature really drops. This one will get you from dawn till dusk, and beyond.
Why you’d buy this: You’re not sure what to get or what will fit you best - so you play it safe and get this because it’s part of our most versatile, good for everything range. You want an easy/casual fit, something merino rich (this one’s 83%), but a bit more durable to resist snags and wear.
As with all our clothes, the merino delivers natural temperature regulation, breathability, moisture wicking and odour resistance.
Designed with a regular, casual fit similar to our best-selling Keystone tops.
True to size.
Model wears size medium in Dazzling Blue, Black, and, Charcoal.
Model specs - height 181cm, chest 103cm, waist 81cm.
Model wears a size medium in Silver Pine.
Model specs - height 179cm, chest 91.5cm, waist 81cm, hips 88.3cm.
Model wears a size medium in Chilli Pepper.
Model specs - height 188cm.
Hiking
Camping
Running
Lightweight 160gsm
83% superfine Australian Merino Wool
12% Nylon for extra durability
5% Elastane for an easy all-way stretch
Very comfortable, I have a few short sleeved ones so wanted a longer sleeve option too for the cooler months.
Love my IO Merino long sleeve. Really warm for the Melbourne winter and it dries well in wet weather. Great for bike riding and walking. Very happy and will buy again.
I have found it's extremely versatile. I have used it for normal everyday, in bed, but also it was also great for a hikes and up at the snow. I have also found that is is made really well. It has lasted a long time and the stitching has help up well over time.
Also, the green came out looking great!
really comfortable fine wool ideal fr walking etc.
This was my first merino wool shirt, I'm about 5"9 and 75kg and size large fits me good, before I ramble on too much I'll just say it's awesome and has become my go-to shirt and would definitely recommend it, it's great at regulating body temp and keeping you warm. I wear it under an Arcteryx atom Lt when cold and just by itself when mild.
It was hard to know what to expect in regards to the feel of merino wool having not worn other shirts before and I suppose it would vary person to person considering everyone's skin is different. For me when first put on for the first minute or so there's a slight scratchy feel to it ( not itchy ) then it's as if my skin adjusts to the wool and it's just like wearing a normal shirt.
I have since bought two merino shirts on sale at Kathmandu I knew the quality wouldnt be as good but I was willing to gamble and see for myself.
The Kathmandu shirts to me are itchy and stay that way throughout the day, it's bearable but definitely not comfortable and aren't even in the same league as the Io merino shirt.
I'll round up by saying you usually get what you pay for and for my next shirt I'll definitely be buying another one from here.
Cheers.
Hi Kane! Thanks so much for your awesome review, we love the comparison test. You're right, investing in quality is completely worth it! Hope you continue to enjoy your ioMerino. Come back and shop with us again soon.