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Ultra Zip - Big Heart Adventures

Name: Ultra Zip - Big Heart Adventures
Brand: ioMerino
SKU: BHA17-331-74-01
Price: 130.00 AUD
Availability: InStock

35 reviews

Size Guide

All size charts

ioMerino Size Guide

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.

Men's General Size Chart

		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+

Men's Summit Zip Hoodie

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

Men's Summit Easy Fit Hoodie

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

Men's Tracksuit Pants

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

Men's Pace Compression Leggings - Original

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

Men's Stride Track Pants

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

Women's Size Conversion Chart

	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

Women's Size Chart - Altitude 'Contact Fit'

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
Bust	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
Waist	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
Hips	cm	84-90	90-96	96-102	102-108	108-115	115-122

Women's Size Chart - Universal, Ultra, and Horizon 'regular fit'

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
Bust	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
Waist	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
Hips	cm	83.5-90	90-97.5	97.5-104	104 -111.5	111.5-119.5	119-127

Women's Summit Zip Hoodie

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

Women's Summit Easy Fit Hoodie

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

Women's Stride Tracksuit pants

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

Women's Yoga Pants

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

Women's Freedom Sweatpants

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

Women's Pace Compression Leggings - Original

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

Women's Pace Compression Leggings

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

Women's Pace 3/4 Compression Leggings

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

Women's Pace Bike Shorts

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

Socks

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

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
M	31 - 32 cm	48 cm
L	33 cm +	49.5 cm

Gloves

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.

Chaser Gloves:

S/M	16.5 cm
L/XL	18.5 cm

Pace Gloves:

S	16.5 cm
M	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.

$130.00

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DETAILS
FABRIC - MERINO+

DETAILS

The Women's Ultra Zip Base Layer top is as soft and comfortable as ever combining all the natural benefits of our finest MicroMerino® fabrics with just enough nylon to create our most durable fabric ever to withstand the most demanding adventures.

Designed with Ultra Runners in mind we made it extra comfortable and extra durable. Made with lightweight 83% superfine Australian Merino Wool, 12% Nylon for durability and 5% Elastane for an easy four-way stretch and freedom of movement. Still Merino-rich, and perfect for adventure racing and what in Australia, we like to call ‘bush bashing’. The sporty fit is streamlined, but not ‘contact fit’ like the Altitude Base Layer Range.

It is the ultimate in versatility and temperature regulation; roll the sleeves up, and pull the zip down when it’s mild and pull the sleeves down, zip up and thumb loops on when the temperature drops. Wear it on its own to stay cool in warm or mild weather, or as part of a layering system when the temperature drops.

This Base Layer is packed with extra performance features like tag-free labels and flatlock stitching helps eliminate chafe and maximize comfort. The high collar and ¾ zip add greater temperature regulation, while the thumb loops keep your hands warm and stop your sleeves riding. The reflective trims have been added for extra safety in low light.

Designed with a body-skimming, sports fit. True to size.

Print to order. Exclusive Big Heart Adventures limited edition print.

FABRIC - MERINO+

Lightweight 160gsm

83% superfine Australian Merino Wool

12% Nylon for extra durability

5% Elastane for an easy all-way stretch

Lightweight warmth

This is fantastic for cold weather running. The zip is so handy for adjusting the warmth as I warm up. The neckline is cosy when starting out. I team this with an IO tank top and it works perfectly on a 1 degree morning!

Quality

This is a great long sleeve merino top to wear when hiking in cooler weather. Very soft merino, so no skin irritation.

Came back for more !

I took this top and a Universal Tee with me hiking in Slovenia late August. Both were so good on the trail ( kept me cool while hiking and
warm at night, and didn't get smelly after several days) that I bought another of each. They worked just as well in the drizzly chilly Spring weather Adelaide's having at the moment.

Love this garment

This is my second purchase of this style. I love the wool next to my skin in all weathers. I love the square shoulder design. I love the cherry red colour.

Perfectly Ultra

IO ultra zip is perfect - aI live it as a layer in the Canberra cold, warm, soft and love the green.

Very comfortable

Great for layering, also got one as a gift for sa friend and she loved it too. Have several colours now

1 2 3

Uncomfortable

I have been wearing ioMerino underwear for years and am a big fan of the brand but this batch is a completely different shape and fit to the extent that the garments are unwearable.

Hi there Michelle,

We're sorry to hear you don't like them. If you would like, we can do a return for a refund/exchange, as we have a 60 day return/exchange policy, and we wouldn't want to leave you with something that you aren't happy with.

All the best,
Coby
Customer Service

Universal Long Sleeve Tee - Wise Women Walking

I love my universal long sleeve tee. I have worn it on numerous long hikes and have found it to be fast drying if caught in light drizzle or when sweaty. On a cool day it is fine on its own, or under other clothes if cold. Perfect for when the weather is warmer too, plus protects arms from the sun. I love the dazzling blue colour too.

Quality Product

Very happy with this purchase. Fits well. Well made. And does it’s job. Keeping me warm.

Great products

I’ve been wearing ioMerino since their launch and used to work in the wool apparel industry. Fantastic company and product- I still have base layers from 2008 that have worn incredibly… great ti see them evolving and improving. The performance aspect is excellent.

My new favorite sports bra

I am between sizes so went with the larger size and the fit is perfect. Very comfortable!

I didn’t think I could wear merino until I got this

Looks good, feels soft, light and easily packable.
I washed it in the sink and it dried hanging in my bathroom in 5 hours.

I’m a size 12 Aus in almost everything or a medium and the medium in this fits comfortably.

I have already ordered another Universal top and two tanks tops and a bra for my upcoming 6 week trip. I like that not all of the tops look super outdoorsy so are more city travel friendly.

Currency

Ultra Zip - Big Heart Adventures

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

Customer Reviews

What layer is right for you?

what would an Australian company know about cold weather?

Instagram feed

You may also like

Let customers speak for us

Currency

Ultra Zip - Big Heart Adventures

All size charts

ioMerino Size Guide

Men's General Size Chart

Men's Summit Zip Hoodie

Men's Summit Easy Fit Hoodie

Men's Tracksuit Pants

Men's Pace Compression Leggings - Original

Men's Stride Track Pants

Women's Size Conversion Chart

Women's Size Chart - Altitude 'Contact Fit'

Women's Size Chart - Universal, Ultra, and Horizon 'regular fit'

Women's Summit Zip Hoodie

Women's Summit Easy Fit Hoodie

Women's Stride Tracksuit pants

Women's Yoga Pants

Women's Freedom Sweatpants

Women's Pace Compression Leggings - Original

Women's Pace Compression Leggings

Women's Pace 3/4 Compression Leggings

Women's Pace Bike Shorts

Socks

Pace Arm warmers

Gloves

Skull Cap

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

Customer Reviews

What layer is right for you?

what would an Australian company know about cold weather?

Instagram feed

You may also like

JOIN THE CLUB

Let customers speak for us