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Main page » Children » Functional underwear » Underwear & Nightwear » Reima Kinsei Thermal Set - melange grey
Responsible Merino wool brings outstanding warmth to Arctic conditions, and Tencel® adds sustainable softness.
To keep children as comfortable as possible in the cold winter weather, we’ve learned to love layers. Especially those with wool: natural wool gives the best warmth without weight and warms you even when it's wet. Combined with eco-friendly Tencel®, it's so soft and warm you could wear it all the time. The Kinsei base layer set is a great choice for the Arctic cold. Many parents choose this Reima best-seller as all-winter wear for their toddlers who don't yet run around and thus need more warmth than busily playing kids. Available from size 80 cm up until 160 cm, this kids' thermal set warms children of all ages.
Product information
Top | Main material: 72% merino wool, 28% lyocell
Bottom | Main material: 72% merino wool, 28% lyocell
Wash with similar colours, inside out. Do not use detergents with bleaching agents. Reshape to dry. Dry in room temperature.
Find more products here
To keep children as comfortable as possible in the cold winter weather, we’ve learned to love layers. Especially those with wool: natural wool gives the best warmth without weight and warms you even when it's wet. Combined with eco-friendly Tencel®, it's so soft and warm you could wear it all the time. The Kinsei base layer set is a great choice for the Arctic cold. Many parents choose this Reima best-seller as all-winter wear for their toddlers who don't yet run around and thus need more warmth than busily playing kids. Available from size 80 cm up until 160 cm, this kids' thermal set warms children of all ages.
Product information
- Soft Merino wool/Tencel® mix for perfect thermal control
- Eco-friendly Tencel® lyocell fiber provides comfort and adds durability
- Keeps you warm even when wet
- Soft, flat seams for extra comfort: no chafing
- For cold weather
- Elastic waist
- Longer back hem
Top | Main material: 72% merino wool, 28% lyocell
Bottom | Main material: 72% merino wool, 28% lyocell
Wash with similar colours, inside out. Do not use detergents with bleaching agents. Reshape to dry. Dry in room temperature.
Find more products here
Reima Size Chart
Fit-und-Warm carries Reima for babies, children and teens with outdoor/rain apparel, footwear and accessories. This chart covers clothing, gloves, headwear and shoes.
Clothing 50–104
| Size | Age | Height | Chest | Waist | Hip | Arm length (cm) |
|---|---|---|---|---|---|---|
| 50 | 1 M | 50 | 43 | 46 | 51 | 23.4 |
| 56 | 2 M | 56 | 44.5 | 47 | 52 | 25.7 |
| 62 | 3 M | 62 | 46 | 48 | 53 | 28 |
| 68 | 6 M | 68 | 47.5 | 49 | 54 | 30.3 |
| 74 | 9 M | 74 | 49 | 50 | 55 | 32.6 |
| 80 | 1 Y | 80 | 50.5 | 51 | 56 | 34.9 |
| 86 | 1,5 Y | 86 | 52 | 52 | 57 | 38.1 |
| 92 | 2 Y | 92 | 54 | 53 | 58 | 40.6 |
| 98 | 3 Y | 98 | 56 | 54 | 60 | 43.1 |
| 104 | 4 Y | 104 | 57 | 55 | 62 | 45.6 |
Clothing 110–164
| Size | Age | Height | Chest | Waist | Hip | Arm length (cm) |
|---|---|---|---|---|---|---|
| 110 | 5 Y | 110 | 60 | 56 | 64 | 48.3 |
| 116 | 6 Y | 116 | 62 | 57 | 66 | 51 |
| 122 | 7 Y | 122 | 64 | 58 | 68 | 53.7 |
| 128 | 8 Y | 128 | 66 | 60 | 70 | 56.4 |
| 134 | 9 Y | 134 | 69 | 62 | 72 | 59.6 |
| 140 | 10 Y | 140 | 72 | 64 | 75 | 62.8 |
| 146 | 11 Y | 146 | 75 | 66 | 78 | 65.7 |
| 152 | 12 Y | 152 | 78 | 68 | 81 | 68.6 |
| 158 | 13 Y | 158 | 81 | 70 | 84 | 71.6 |
| 164 | 14 Y | 164 | 84 | 72 | 87 | 74.6 |
Apparel source status: Reima confirms selection by body height and recommends fitting because cuts differ. Complete body measurements are supplemented from a high-quality retailer size chart.
Kids' Gloves
| Size | Age | Hand length (cm) | Hand circumference (cm) |
|---|---|---|---|
| 0 | 0–12 M | 8 | 10 |
| 1 | 6–18 M | 9 | 11.5 |
| 2 | 1–2 J | 10 | 12.5 |
| 3 | 2–4 J | 11.5 | 13.5 |
| 4 | 4–6 J | 13 | 15 |
| 5 | 6–8 J | 14 | 16 |
| 6 | 8–10 J | 15 | 17 |
| 7 | 10–12 J | 16 | 17.5 |
| 8 | 12–14 J | 17 | 18 |
Headwear
| Head circumference (cm) | Age |
|---|---|
| 34–36 | 0–2 M |
| 38–40 | 2–4 M |
| 42–44 | 4–6 M |
| 46 | 6–9 M |
| 48 | 9 M–1,5 Y |
| 50 | 1,5–3 Y |
| 52 | 2–5 Y |
| 54 | 4–7 Y |
| 56 | 7–12 Y |
| 58 | 12–14 Y |
Kids' Shoes
| EU | UK | Mondopoint (mm) |
|---|---|---|
| 18 | 2.5/3K | 104–109 |
| 19 | 3.5K | 110–113 |
| 20 | 4/4.5K | 114–119 |
| 21 | 5K | 120–126 |
| 22 | 5.5/6K | 127–132 |
| 23 | 7K | 133–139 |
| 24 | 7.5K | 140–147 |
| 25 | 8/8.5K | 148–154 |
| 26 | 9K | 155–161 |
| 27 | 9.5/10K | 162–168 |
| 28 | 10.5K | 169–174 |
| 29 | 11K | 175–181 |
| 30 | 11.5/12K | 182–188 |
| 31 | 12.5/13K | 189–194 |
| 32 | 13.5K | 195–201 |
| 33 | 1/1.5 | 202–208 |
| 34 | 2/2.5 | 209–214 |
| 35 | 3 | 215–221 |
| 36 | 3.5/4 | 222–229 |
| 37 | 4.5/5 | 230–235 |
| 38 | 6 | 236–242 |
| 39 | 6.5 | 243–249 |
| 40 | 7 | 250–255 |
| 41 | 7.5 | 256–263 |
| 42 | 8 | 264–270 |
Reima recommends measuring the foot while standing and choosing the size closest to the actual foot length in the chart. Reima already includes growth/movement allowance in the recommended shoe size.
Assortment check: Fit-und-Warm Reima brand page. Manufacturer sources: Reima Help Center for size and footwear selection. Supplementary size reference: Alpinetrek/Bergfreunde Reima size chart. Research checked on 20 August 2026.