

🔥 Stay warm, stay sleek — the Merino base layer that works as hard as you do!
Brass Monkeys’ 100% Pure Merino Wool Long Sleeve Base Layer is a New Zealand-made thermal undershirt designed for women who demand ethical sourcing, superior comfort, and smart temperature regulation. Crafted from ultra-fine 19 micron Merino wool, it offers itch-free softness, natural odor resistance, and lightweight warmth ideal for sports and everyday wear.






| ASIN | B01LZCO4Z1 |
| Best Sellers Rank | 96,694 in Fashion ( See Top 100 in Fashion ) 121 in Women's Thermal Tops |
| Customer reviews | 4.1 4.1 out of 5 stars (34) |
| Date First Available | 1 Oct. 2016 |
| Department | Women's |
| Manufacturer | Brass Monkeys |
B**.
Good
Top quality product. Highly recommend if you are after warmth
P**B
Sizing
Unfortunately the item is too small
A**R
High quality, comfortable & warm
This merino long sleeve is amazing value, great quality, really warm and comfortable to wear. Not itchy at all. I’ve worn under jumpers and on it’s own. The size is a little small, so definitely size up.
H**1
Feels very comfortable
I am very happy with this top. The fabric feels super soft against my skin and not itchy at all. I am tall and the sleeves and body are both a great length for me. Although the fabric is lightweight, it feels well made and is not see through at all. All of the stitching looks neat and secure. I love everything about this top, but I will say that the sizing seems a little small. A premium top that I love to wear as a layering piece, but I also find it substantial enough to wear alone.
T**L
Very small fitting, so size up.
Lovely and warm. Sizes are tiny unless you want skin tight. I ordered an XL which is a comfortable but not tight fit on me (size 12)
G**G
Chemicals?
Loved this top until I washed it last night. Now it is hung up drying and it really smells extremely strongly of chemicals.
E**N
Excellent product made in New Zealand. Very warm in the cold and also comfortable when warmer
Exactly what I hoped. Lovely product
J**A
Perfect fit for a base layer and super soft
We bought the Men's short sleeve V (XL) & a women's long sleeve (size 14) in December ahead of our ski trip. The items arrived really quick and we're nicely packaged. They are a perfect fit for a base layer and super soft! Very happy with our purchase, thank you.
G**N
Very warm and very comfortable. Good fit. Value for the money
Trustpilot
2 months ago
2 days ago