Womens Merino 150 Short Sleeve Crew (Red)
Made from superfine 150gm Merino, this short sleeved top will soon become a staple in your wardrobe, whether you need a base layer for hiking in the mountains or a casual top for the weekend! Merino keeps you warm when it's cold and breathes well when it's warm, keeping you comfortable whatever the weather. It's also quick drying, naturally odour resistant and sustainable. Join our Flock.
- 150gm 18.5 micron Superfine 100% Merino wool
- Ideal to use as a base layer for a multitude of activities, from skiing & hiking, to cycling & running
- Underarm gusset panels for seam free comfort
- Flatlock stitching helps to reduce chafing
- Off set shoulder seams to prevent rucksack straps from rubbing
- Drop tail hem for additional coverage
- Naturally soft, moisture wicking, odour resistant and breathable
- Can be worn on its own, or as part of a layering system for added warmth
- Embroidered ISOBAA sheep logo
- ISOBAA folded hem label
- Easy care & quick drying
- Recycled packaging
- Weight (size S): 137g
- This is an athletic fit, so size up if you prefer a more relaxed fit
Made in China by an internationally audited factory to confirm working conditions are fair, safe, and environmentally sound.
- 100% Merino Wool
- 150gsm
- 18.5µm microns
Fabric weight: 150gsm
Fabric weight (gsm)
GSM means grams per square metre. Higher GSM usually means a thicker knit, more warmth, and better wind resistance.
Lower GSM usually feels lighter, dries faster, and is better for high output.
Fibre diameter: 18.5µm
Fibre diameter (microns)
Microns measure the thickness of each merino fibre.
Smaller microns usually feel softer against skin because the fibres bend more easily. Larger microns usually feel firmer and can be more rugged for outer layers.
| Fibre | Thickness |
|---|---|
| Ultra fine | 15µm |
| Super fine | 17.5µm |
| Fine | 20µm |
| Mid-weight | 22.5µm |
| Coarse | 25µm |
| Human hair | ~70µm |
Merino's natural odour resistance means a simple air between wears is almost always enough, and the less you wash it, the longer it lasts.
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| Materials | 100% Merino Wool |
| Origin | Made in China in a factory independently audited to international standards for fair labour, safe working conditions, and responsible environmental practices, using ethically sourced, non-mulesed Merino wool from Australia |
| Care guide | Isobaa care guide |
- Free shipping (United Kingdom) on orders above £75.
- Orders usually ship within 2–3 days, though may take longer during sales. See the product page for estimated delivery.
- You can return your order within 100 days for a refund. Return shipping is not included. Items must be unworn with tags attached. Exchanges are not currently available.
- See our shipping & returns page for details.
Choose options
Offset shoulder seams
Thoughtfully positioned seams sit away from rucksack straps, eliminating pressure points and rubbing on long days out with a pack
Underarm gusset panels
Seamless underarm panels move naturally with your body, giving you unrestricted movement and all-day comfort
Drop tail hem
A longer hem at the back gives you extra coverage where you need it most, whether you're moving, bending or layering up
Proudly natural
Our Merino wool is ethically sourced from trusted Australian suppliers with a heritage dating back to 1857. We only use non-mulesed wool, working with partners who prioritise animal welfare and responsible land management.
Merino is a renewable, biodegradable fibre that naturally regulates temperature, manages moisture and resists odour, delivering reliable performance with a lighter environmental impact.
100% Merino Wool
Temperature regulating
Keeps you warm when cold, and cool when warm
Moisture management
Pulls sweat away and dries quickly
Odour resistant
Stays fresher for longer
Super soft
Feels smooth and gentle on skin