THMO Thermal Base Layer Set - Black - 3-4

Keep your child warm and cosy with the THMO Long Sleeved Thermal Top & Long Johns Set. Ideal for o...

Best current price£13.75from Debenhams

Child Size UK
Colour
Material

All Offers

2 offers from £13.75 - £19.99

View price history by clicking the chart icon.

DebenhamsThmo Men's Black Boy's Thermal Base Layer Set | Fleece Thermal Top & Long Johns Set In | Size: 3-4 Years
Free delivery in 1–3 days
£13.75
Visit shop
The RangeThmo Kids Thermal Base Layer Set | Fleece Thermal Top & Long Johns Set - Black / 3-4 Years
Free delivery in 1–3 days
£19.99
Visit shop

Product Information

Full details

The THMO Thermal Base Layer Set is designed for children aged 3-4 who need reliable warmth during outdoor winter activities or chilly days at home. This set provides excellent thermal insulation through its lightweight, soft-touch fleece material, making it an ideal choice for layering under winter coats or ski suits; however, parents should note that it is designed primarily as a base layer rather than heavy-duty outerwear.

All features

Age Groupkids
ColourBlack
GenderUnisex
MaterialFleece
Child Size UK3-4
Model Part Number1389826
BrandTHMO

Extended Product Information

FAQs

Is this set suitable for sensitive skin?

Yes, the fleece material is specifically chosen for its soft texture, which is generally gentle on children's skin compared to traditional wool thermals.

Can my child wear this under school clothes?

Yes, the thin and lightweight nature of the fabric makes it ideal for wearing under uniforms or everyday clothing without being visible.

Does it overheat the child when they go indoors?

The fabric is designed to be breathable, which helps regulate temperature when moving from cold outdoor environments to warmer indoor spaces.

What is the best way to wash this set?

We recommend machine washing on a gentle cycle and avoiding high-heat drying to preserve the fabric's soft properties.

Is this set unisex?

Yes, the THMO Thermal Base Layer Set is designed as a unisex product suitable for both boys and girls.

Does the set stretch out after prolonged wear?

The material is designed to retain its shape well, though like all base layers, it should be washed after use to restore its fit.

Troubleshooting

Waistband feels too loose during play

Ensure the waistband is pulled up fully and worn under outer clothing that helps hold the long johns in place.

Fabric appearing slightly pilled after many washes

Wash the set inside-out in a mesh laundry bag to reduce friction with other garments in the washing machine.

Pros and Cons

Pros

  • Lightweight and non-bulky fabric
  • Soft texture prevents skin irritation
  • Excellent for both active outdoor play and indoor lounging
  • Easy to maintain with machine washing
  • Provides reliable insulation without causing overheating

Cons

  • Available in limited size range (3-4 years)
  • Not intended for use as standalone heavy outerwear
  • Design is purely functional and simple

Setup, Compatibility & Care

This base layer set requires no setup; simply dress your child in the top and long johns as you would standard undergarments. The set is compatible with most standard children's outdoor winter gear. To maintain the integrity of the fleece fabric, machine wash the set on a gentle cycle with like colors. Avoid using harsh bleaching agents or high-heat drying, as this can degrade the thermal fibers. Air drying or tumble drying on a very low heat setting is recommended to ensure the elasticity of the waistband remains intact for long-term use.

Price History

DatePrice
Visit shop