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LNFINTDO Boys Thermal Underwear Set, 215 GSM, Black, 11-12 Years

£14.99 (as of 06/11/2026 10:02 GMT - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

A black LNFINTDO boys’ thermal underwear set in size 11-12 years, comprising a long-sleeved top and full-length leggings. The 215 GSM fabric is 90% polyester and 10% elastane, with four-way stretch and flatlock seams. Check garment measurements or a size guide, if available, as an age label alone may not confirm fit. The stated care guidance is machine washing on a cool cycle.

SKU: B0FC1J5B77 Category:

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Quick Summary

This LNFINTDO boys’ thermal underwear set contains a long-sleeved top and full-length leggings in black, listed for ages 11-12 years. The fabric is 215 GSM, made from 90% polyester and 10% elastane, with four-way stretch.

Key Details

Detail Product information and buyer relevance
Set One long-sleeved top and one pair of full-length leggings.
Fabric 90% polyester and 10% elastane, with four-way stretch.
Fabric weight 215 GSM.
Size and colour 11-12 years, black. Check garment measurements or the size guide, if available, against the child’s measurements.
Construction Flatlock seams, with a double-stitched crew neck and cuffs.
Fabric properties Described as breathable, moisture-wicking and quick-drying.

What to Compare Before Buying

  • Fit: The set has a form-fitting cut intended to sit under other clothing. Check garment measurements or the size guide, if available, rather than relying on age alone.
  • Layering: Consider whether both a long-sleeved top and full-length leggings suit the clothing they will be worn beneath.
  • Fabric and care: The polyester-elastane blend has four-way stretch. The stated care guidance is machine washing on a cool cycle.

Who This Product May Suit

The set is described for children’s cold-weather activities including football, skiing, running and ice skating. The listing also mentions wearing it beneath school or everyday clothing. These are suggested uses, not a guarantee of warmth or suitability for particular weather conditions.

What Is Included

The set comprises one long-sleeved base layer top and one pair of full-length leggings.

Care, Cleaning and Storage

Machine wash on a cool cycle, as stated for this set. Follow any care guidance on the garment label.

Before You Decide

Check that the size is suitable, that the two-piece set matches the intended layers, and that the cool-cycle care instruction fits your laundry routine.

Brand

LNFINTDO

Manufacturer

LNFINTDO

Binding

Unknown Binding

Product Group

Apparel

Part Number

LFRSL675-Black-150-FBA

Model

LFRSL675-Black-150-FBA

Color

Black

Size

11-12 Years

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