100% Merino Wool
Icebreaker Women's Merino 200 Oasis Thermal Top front flat lay, Black
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Black
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Black
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Black
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top front flat lay, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top collar detail, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top fabric texture detail, Tidal Teal
1 18
Icebreaker Women's Merino 200 Oasis Thermal Top front flat lay, Black
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Black
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Black
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Black
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Topaz
Icebreaker Women's Merino 200 Oasis Thermal Top front flat lay, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top front view, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top back view, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top full length front, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top collar detail, Tidal Teal
Icebreaker Women's Merino 200 Oasis Thermal Top worn outdoors, lifestyle picture
Icebreaker Women's Merino 200 Oasis Thermal Top fabric texture detail, Tidal Teal
Icebreaker

Women's Merino 200 Oasis Thermal Top

€99.95
Size: Size chart
greatoutdoors Icebreaker Size Guide
Icebreaker® — Size Guide

Find Your Icebreaker Size

All measurements are body measurements in centimetres (cm). Use the charts below for Men's and Women's tops, bottoms and gloves.

Men's Clothing
All measurements are body measurements in centimetres (cm).
Tip: If you are between sizes, go up to the next size. Icebreaker merino garments are cut close to the body — if you prefer a more relaxed fit, consider sizing up.
Men's Tops & Jackets (cm)
Measurement S M L XL XXL XXXL
Neck (cm) 34–36 36–38 38–41 41–43 43–46 46–49
Chest (cm) 83–91 91–99 99–107 107–115 115–123 123–133
Arm Length (cm) 86.5–87 87–87.5 87.5–88 88–89 89–90 90–91
Men's Bottoms — Alpha, EU, UK, US, IT, FR sizing
Alpha Size EU UK US IT FR Waist (cm) Numeric Size
XS 44 28 28 44 38 69–73 28
S 46 30 30 46 40 73–78 30
M 48 32 32 48 42 78–82 32
M 50 34 34 50 44 82–86 34
L 52 36 36 52 46 86–90 36
XL 54 38 38 54 48 90–95 38
XL 56 40 40 56 50 95–99 40
🙋 Not sure about your size?

Our team is here to help you find the perfect fit. Get in touch and we'll sort it out for you.

📞 01 679 4293 ✉ info@greatoutdoors.ie

How to Measure — Men's

1
ChestMeasure at the fullest part of your chest, just under your armpits. Keep the tape horizontal and firm but not tight.
2
NeckMeasure around the base of your neck where a collar would sit. Keep the tape comfortably firm.
3
Arm LengthMeasure from the centre back of your neck, over the shoulder, and down to the wrist with your arm slightly bent.
4
WaistMeasure around the natural waistline — roughly two inches below the belly button for trouser sizing.
Women's Clothing
All measurements are body measurements in centimetres (cm).
Tip: If you are between sizes, go up to the next size. Icebreaker merino garments are cut close to the body — if you prefer a more relaxed fit, consider sizing up.
Women's Tops & Jackets (cm)
Measurement XS S M L XL
Bust (cm) 76–82 82–88 88–94 94–100 100–107
Arm Length (cm) 77–77.5 77.5–78 78–78.5 78.5–79 79–79.5
Waist (cm) 58–64 64–70 70–76 76–82 82–89
Hips (cm) 84–90 90–96 96–102 102–107 107–113
Women's Bottoms — Alpha, EU, UK, US, IT, FR sizing
Alpha Size EU UK US IT FR Waist (cm) Numeric Size
XS 32 6 2 36 34 58–64 26
S 34 8 4 38 36 64–67 27
S 36 10 6 40 38 67–70 28
M 38 12 8 42 40 70–73 29
M 40 14 10 44 42 73–76 30
L 42 16 12 46 44 76–79 31
L 44 18 14 48 46 79–82 32
XL 46 20 16 50 48 82–89 33
🙋 Not sure about your size?

Our team is here to help you find the perfect fit. Get in touch and we'll sort it out for you.

📞 01 679 4293 ✉ info@greatoutdoors.ie

How to Measure — Women's

1
BustMeasure at the fullest part of your bust, keeping the tape horizontal and firm but not tight.
2
WaistMeasure around the narrowest part of your waist. For bottoms, measure roughly two inches below the belly button.
3
HipsMeasure around the fullest part of your hips and seat, keeping the tape horizontal.
4
Arm LengthMeasure from the centre back of your neck, over the shoulder, and down to the wrist with your arm slightly bent.
Gloves — Unisex
Hand length and palm girth in centimetres (cm). Measure your dominant hand.
Tip: Measure both hand length and palm girth, then use the larger of the two to find your size. If between sizes, size up for a more comfortable fit.
Glove Size Chart — Unisex (cm)
Measurement XS S M L XL
Hand Length (cm) 17 18 19 20 21
Palm Girth (cm) 18.5 19.5 21 22.5 23.5
🙋 Not sure about your size?

Our team is here to help you find the perfect fit. Get in touch and we'll sort it out for you.

📞 01 679 4293 ✉ info@greatoutdoors.ie

How to Measure — Gloves

1
Hand LengthMeasure from the base of your wrist to the tip of your middle finger in a straight line, with your hand flat and open.
2
Palm GirthWrap the tape around the widest part of your palm, excluding the thumb, with fingers relaxed together.
3
Use the Larger SizeIf your hand length and palm girth suggest different sizes, always choose the larger size for the best fit and warmth.

Size guide sourced from Icebreaker. For any queries, visit greatoutdoors.ie or contact our team in store.
Colour: Black
In stock, ready to ship
Get it Tue, Jun 16 – Wed, Jun 17
Free Delivery over €75 (IE) 31-Day Returns Policy
Benefits
merino wool
breathable
quick-drying
thermoregulating
Frequently bought together
Icebreaker Women's Merino 200 Oasis Thermal Leggings  front view
Women's Merino 200 Oasis Thermal Leggings
€99.95
Icebreaker Unisex 200 Oasis Glove Liners  pair view
Unisex 200 Oasis Glove Liners
€36.99
Grangers Merino Wash 300ml
Merino Wash (300ml)
€8.99
Icebreaker 200 Oasis Reversible Beanie front view, Summit/Blush
200 Oasis Reversible Beanie
€36.99
Soft, breathable, and naturally odor-resistant—this merino base layer is your go-to for cold-weather layering and everyday comfort.

Details

Customer Reviews

Based on 2 reviews
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Nathaniel Doyle
Men's Merino 200 Oasis Long Sleeve Crew - Blaze

This top is a great piece of gear. I have been out in two very wet and cold hikes of 6 hours each and the Oasis crew top has kept me warm under the rain jacket while wicking away sweat. At the end of the hike id take the top off and my skin is dry and surprisingly the top does not even smell. I recommend this top highly.

C
Christopher Reddy

Very comfortable

Layer: Base Layers
Style: #104375
Product Weight: Small = 183 g / 6.45 oz
Good For: Hiking, Snow Sports, Everyday
Fabric Content: 100% Merino Wool, Exclusive of decoration
Warmth System: 200
Merino Fiber Micron: 15µ, 18.9µ, 25µ
Care: Machine wash warm. Wash with like colors. Do not use softeners. Fasten all closures to wash and dry. Do not bleach. Do not tumble dry. Line dry in shade. Warm iron. Do not iron print, trims, or accessories. Do not dry clean.
Fit & Sizing: Slim Fit – A snug, close-to-body fit for low-bulk layering
Model Info: Height: 174cm / 5'4", Waist: 65cm / 25", Wearing size S
Back Length: 69.3cm based on size M

We offer free delivery on all orders over €75, and €5.95 for all orders under €75.
 -We aim to ship all orders placed before 1:00pm on the same business day and have it delivered next-day, but in busy periods this can take longer, so allow for up to 3 working days for fulfillment.

We accept returns within 31 days of receiving the item, either in-store or by post. 
- All items returned must be suitable to be sold again as new. For our full returns policy - click here.
- In-store returns are Free of charge, and returns posted with An Post via our returns page are €5 from a post office, or €6 collected from your home.
- All returns can be organised with An Post click & post, and will be fulfilled as soon as they arrive back at our store. Click here to start a return.

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