Flat Lock Long Sleeve Bamboo Base Layer


Stars (6)

Caspian Sea Space Dye

Exercise outdoors? This women’s base layer long-sleeve top is a BAM icon that will keep you warm and comfortable as you go. Our model is 5ft9″ and is wearing a size 8.

Size 8
Size 10
Size 12
Size 14
Size 16

Cycling, horse riding, skiing, hiking, rowing or whatever your outdoor activity, there’s simply nothing better to have next to your skin than this. A BAM icon, the women’s base layer crew neck long-sleeve top, combines softness and comfort with the unbeatable performance qualities of bamboo. Breathable, sweat wicking, it’s also naturally hypoallergenic, so great for sensitive skins and eczema sufferers. Styled with contrast stitching to flatter and define, thumb loops and fine gathers on the back yoke. Perfect with our Enduro Deep Waistband Leggings

  • Form fitting
  • Crew neck
  • Set-in sleeves
  • Flatlock Stitching
  • Invisible thumb loops
  • Sweat wicking properties
  • Temperature regulating



68% Bamboo Viscose,
28% Organic Cotton, 4% Elastane.

Supremely soft, smooth and comfortable.
Imagine cotton T-shirt fabric only softer, smoother and with all the temperature controlling, moisture managing benefits of bamboo. There’s nothing better for next-to-skin comfort at any time of year.

How to care for your bamboo garments.

Wash on or below
40° C  |  104° F

Washing Instructions - Iron on a Medium Heat

Iron your garments on a medium heat.

Washing Instructions - Do Not Bleach

Do not use bleach

Washing Instructions - Do Not Tumble Dry

Do not tumble dry.

Washing Instructions - Do Not Dry Clean

Do not dry clean.


To Fit UK Bust Size




30 - 32

76 - 81


32 - 34

81 - 86


34 - 36

86 - 91


36 - 38

91 - 96


38 - 40

96 – 101


40 – 42

101 - 107

Feefo badge
19th Nov 20:595 StarsLove the colour, the fit and the thumbholes. I went out for a run on a 2 degree weekend morning and the extended sleeves and thumbholes were enough to keep my hands warm all the way.
19th Nov 15:515 StarsAs above super gift
19th Nov 15:515 StarsTrue to size lovely long sleeves really nice design, would prefer some less girly colours
19th Nov 11:575 StarsA firm favourite already. Cosy, snug and so comfortable
18th Nov 16:535 StarsAs with the other top very pleased with quality, price and delicious very. Have been bragging to my friends about my purchase.
18th Nov 12:275 StarsGreat fit & really comfy.
13th Nov 20:184 StarsBought as already had a base layer from BAM which I liked. This one is good but fabric is not so soft and comfy
11th Nov 16:555 StarsI really like this under garment , which is great for hiking or plates and provides comfort and warmth right down the lower back .
11th Nov 13:245 StarsAs before, although colour not quite as strong has photos.
4th Nov 19:125 StarsSoft and warm base layer, nice bright colour
30th Oct 13:385 StarsLoved this and wore it immediately. Slim fitting, very comfortable.
21st Oct 15:294 StarsLovely colour, but fit a bit tighter than I wanted.
19th Oct 19:473 StarsDidn't find this item to be as warm next to the skin as previous similar tops I have bought from BAM. The fabric seemed much lighter somehow, though it was supposed to be the same weight as previous thermal base…
9th Oct 13:594 StarsGood colour and general fit but for me the neck is too tight/restricting, so I returned it. Would prefer the older style with a slightly more scooped neckline. Lightweight fabric
7th Oct 19:374 StarsVery tight, need to size up. Lovely colour.
21st Sep 05:315 StarsLove the shape, colour and feel of this piece.I will get a lot of wear out of this.
13th Sep 12:285 StarsCannot wait to wear this when I'm out hiking when the weather gets colder.