CL convallaria 24SET Men’s Fleece-Lined Thermal Underwear Set

Underwear: CL convallaria 24SET is a men’s thermal base-layer set described as fleece-lined and stretchy. Its polyester-spandex fabric and long-sleeved top are intended for layering in cold weather, while customer feedback reports comfortable fit and warmth.

At a glance

Fleece lining is presented as a source of warmth against the skin.
Stretch fabric is intended to allow movement and a close fit.
The long-sleeved crew-neck top is designed to be worn under other layers or on its own.
Flat-lock seams are intended to reduce rubbing while worn.

Price

£18.69Save 19%

Reference price: ~~£22.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

A matching thermal set offers a top and bottom layer in one purchase, according to the product description.
The listed polyester-spandex blend includes stretch for movement.
Customer feedback describes a comfortable fit and warmth, including use under trousers and for cold-weather backpacking.

Technical specifications

9 specifications

Identity
Brand	CL convallaria
Model	24SET
Department	Men's

Fabric and construction
Material	90% polyester+ 10% spandex
Lining	soft fleece lining
Seams	All seams are flat-lock

Design and intended use
Top	crew neck and long sleeve
Sizes listed	XS/S/M/L/XL/XXL/XXXL/XXXXL
Colours listed	Black/Grey/Navy Blue Charcoal/White

What to know before buying

The listing describes the top as having breathable perforated inserts, but gives no placement or measurable breathability details. The colour and size options listed may depend on the selected variant.

Who is it for?

A good fit for

Men wanting a fleece-lined base layer for winter clothing and outdoor activities.
Buyers looking for a stretch set to wear beneath everyday clothes or outdoor layers.
Those considering thermal layers for cold-weather sleeping, as mentioned in customer feedback.

Less suited to

Buyers seeking a confirmed natural-fibre or wool base layer. The stated fabric is polyester and spandex.
Shoppers needing quantified insulation, moisture-wicking or drying performance, which the listing does not specify.

CL convallaria 24SET Men’s Fleece-Lined Thermal Underwear Set · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 5,014 ratings

5 stars76%76%
4 stars14%14%
3 stars6%6%
2 stars2%2%
1 star2%2%

Customer feedback highlights fit, warmth, functionality and value, with reported uses including wearing the set under sweatpants, backpacking in cold weather and sleeping as temperatures fall. These experiences are relevant to its stated fleece-lined, stretch base-layer design, but do not establish a specific warmth rating or performance in every condition. The overall rating distribution is mostly five- and four-star, with a smaller share of lower ratings, so experiences are not uniformly positive.

Positive themes

Customers describe the set as fitting well and comfortable under sweatpants.
Customer feedback reports warmth during cold-weather backpacking and overnight use.
Customers mention functionality and value for money.

Frequently asked questions

What is the fabric composition?

The listing specifies 90% polyester+ 10% spandex and describes the set as having a soft fleece lining.

Is this a top-and-bottom set?

The description calls it a thermal underwear set and says the package includes 1 x Thermal Underwear Set. The product title also refers to base layers and long johns.

Can it be worn under everyday clothing?

The listing says it can be layered with other thermal clothing or worn on its own. Customer feedback also mentions wearing it under sweatpants.

Does the listing confirm a particular warmth rating?

No temperature range or quantified warmth rating is provided. Fleece lining is claimed, and customers report that the set keeps them warm.