Glenn Thermal Top
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Glenn Thermal Top
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A high-neck thermal base layer.
The Glenn Thermal Top is a slim, long-sleeved high-neck top in a warm, lightweight stretch knit an easy base layer for autumn and winter.

Warm but lightweight.
A thin, insulating knit that traps warmth without bulk ideal worn on its own or layered under a shirt or jacket.

High-neck coverage.
The turtleneck collar keeps the chill off and adds a clean, modern line.

Slim, stretchy fit.
A high-stretch knit hugs the body for a streamlined layer that moves with you.

Quiet, considered finish.
Solid colours and no loud branding understated by design. A staple you will reach for. Offered in a considered range of colours for the colder months.

Fit note: a slim, stretchy thermal cut to Asian sizing it runs small, so we recommend sizing up, especially if you are tall. Please check the size guide below.
FAQ
How does it fit?+
A slim, stretchy cut that runs small — we recommend sizing up, especially if you are tall. See the size guide below.
What is the fabric like?+
A thin but warm, high-stretch knit. Full composition is confirmed on the care label; hand wash recommended.
Is it warm?+
Yes — it traps warmth without bulk, ideal for autumn, winter, and layering.
Can I wear it as a base layer?+
Yes — the slim high-neck cut layers neatly under a shirt, jumper, or jacket.
What is the collar?+
A turtleneck (high neck) collar for extra warmth and a clean line.
What colours are available?+
Seven colours: White, Black, Navy, Royal Blue, Light Grey, Dark Grey, and Coffee.
SIZE GUIDE
LOCKSTEP
| SIZE | FITS (CHEST, APPROX.) |
|---|---|
| S | 88–96cm |
| M | 96–104cm |
| L | 104–112cm |
| XL | 112–120cm |
| XXL | 120–128cm |
| XXXL | 128–136cm |
Asian sizing. The supplier did not publish exact garment measurements for this style, so the chest ranges are approximate stretched body-fit guidance — it is a slim, high-stretch thermal that runs small, so size up if in doubt.
Our customers tell it better than we do!
★ Trustpilot
Warm And Lightweight
Very warm and lightweight, comfortable to wear. I am 1.70m / 78kg and the size fit perfectly.
Great Winter Base Layer
Excellent under-layer for winter. The polo neck is a bonus, and it has a nice slim fit.
Thin But Warm
Thin fabric that feels warm, with long sleeves and a snug neck. Good for cold winters.
Cosy For The Cold
Long-sleeved and covers the neck — I will spend this winter warm. Great value.
Soft Material
Really soft and seems like good material. Bought it as a gift and it was a hit.
Good For Layering
Good quality and ideal as an inner layer in winter — if you are tall, size up for the sleeves.