Girls Heather Grey Thermal Long Sleeve Tee
Girls Heather Grey Thermal Long Sleeve Tee

Firehouse

Girls Heather Grey Thermal Long Sleeve Tee

$25.00
10% OFF AUTO-APPLIED AT CHECKOUT
Size:XXS
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Size Chart

Find your size below. Jump straight to your product type, or use the "Size Guide" link on any product page to land here automatically. Measurements are approximate — if your child is between two sizes, we recommend sizing up.

Tops  |  Bottoms  |  Dresses  |  Sets & Outfits  |  Leggings  |  Outerwear  |  Swim

Tops (Tees, Sweatshirts, Sweaters, Tanks)

Fit is driven by chest measurement.

Size Height (in) Chest (in)
2T 33–36 20–21
3T 36–39 21–22
4T 39–42 22–23
2 / XXS 34–37 21
3 37–40 22
4 39–42 23
5 / XS 42–45 24
6–7 / S 45–51 25–27
8 / M 51–53 27–28
10–12 / L 54–59 28.5–31
14–16 / XL 60–65 31.5–34

Bottoms (Shorts, Skirts)

Fit is driven by waist measurement.

Size Height (in) Waist (in)
2T 33–36 19–20
3T 36–39 20–21
2 / XXS 34–37 20
3 37–40 20.5
4 39–42 21.5
5 / XS 42–45 22
6–7 / S 45–51 22.5–23.5
8 / M 51–53 24
10–12 / L 54–59 25–26
14–16 / XL 60–65 28–30

Dresses

Fit is driven by chest and waist together.

Size Height (in) Chest (in) Waist (in)
2 / XXS 34–37 21 20
3 37–40 22 20.5
4 39–42 23 21.5
5 / XS 42–45 24 22
6–7 / S 45–51 25–27 22.5–23.5
8 / M 51–53 27–28 24
10–12 / L 54–59 28.5–31 25–26
14–16 / XL 60–65 31.5–34 28–30

Sets & Outfits

Matching top + bottom sets — sized the same as dresses since both pieces need to fit chest and waist together.

Size Height (in) Chest (in) Waist (in)
2 / XXS 34–37 21 20
3 37–40 22 20.5
4 39–42 23 21.5
5–6 / S 42–48 24–25 22–22.5
6X–7 46–51 25.5–27 22.5–23.5
8–10 / M 51–56 27–30 24–25
12–14 / L 57–62 30–32.5 26–28

Leggings

Fit is driven by waist measurement. Includes baby sizes.

Size Waist (in)
6M 18–19
12M 19–20
18M 19.5–20.5
24M 20–21
2 20
3 20.5
4 21.5
5–6 / S 22–22.5
6X 22.5–23
M 23.5–24
L 24.5–26
XL 27–28.5

Outerwear (Jackets, Coats)

Fit is driven by chest measurement — size up if layering over sweaters.

Size Height (in) Chest (in)
6X–7 / S 46–51 25.5–27
8 / M 51–53 27–28
10–12 / L 54–59 28.5–31
14–16 / XL 60–65 31.5–34

Swim

Fit is driven by chest and waist together. Suits run true to size.

Size Height (in) Chest (in) Waist (in)
4 / XXS 39–42 23 21.5
5–6 / S 42–48 24–25 22–22.5
7–8 / M 48–53 26–28 23–24
10–12 / L 54–59 28.5–31 25–26

Measurements for baby and toddler sizes, and sizes 2, 3, and 6X, are typical industry estimates for these ages, since exact measurements can vary slightly by style.

Size Chart

Find your size below. Jump straight to your product type, or use the "Size Guide" link on any product page to land here automatically. Measurements are approximate — if your child is between two sizes, we recommend sizing up.

Tops  |  Bottoms  |  Dresses  |  Sets & Outfits  |  Leggings  |  Outerwear  |  Swim

Tops (Tees, Sweatshirts, Sweaters, Tanks)

Fit is driven by chest measurement.

Size Height (in) Chest (in)
2T 33–36 20–21
3T 36–39 21–22
4T 39–42 22–23
2 / XXS 34–37 21
3 37–40 22
4 39–42 23
5 / XS 42–45 24
6–7 / S 45–51 25–27
8 / M 51–53 27–28
10–12 / L 54–59 28.5–31
14–16 / XL 60–65 31.5–34

Bottoms (Shorts, Skirts)

Fit is driven by waist measurement.

Size Height (in) Waist (in)
2T 33–36 19–20
3T 36–39 20–21
2 / XXS 34–37 20
3 37–40 20.5
4 39–42 21.5
5 / XS 42–45 22
6–7 / S 45–51 22.5–23.5
8 / M 51–53 24
10–12 / L 54–59 25–26
14–16 / XL 60–65 28–30

Dresses

Fit is driven by chest and waist together.

Size Height (in) Chest (in) Waist (in)
2 / XXS 34–37 21 20
3 37–40 22 20.5
4 39–42 23 21.5
5 / XS 42–45 24 22
6–7 / S 45–51 25–27 22.5–23.5
8 / M 51–53 27–28 24
10–12 / L 54–59 28.5–31 25–26
14–16 / XL 60–65 31.5–34 28–30

Sets & Outfits

Matching top + bottom sets — sized the same as dresses since both pieces need to fit chest and waist together.

Size Height (in) Chest (in) Waist (in)
2 / XXS 34–37 21 20
3 37–40 22 20.5
4 39–42 23 21.5
5–6 / S 42–48 24–25 22–22.5
6X–7 46–51 25.5–27 22.5–23.5
8–10 / M 51–56 27–30 24–25
12–14 / L 57–62 30–32.5 26–28

Leggings

Fit is driven by waist measurement. Includes baby sizes.

Size Waist (in)
6M 18–19
12M 19–20
18M 19.5–20.5
24M 20–21
2 20
3 20.5
4 21.5
5–6 / S 22–22.5
6X 22.5–23
M 23.5–24
L 24.5–26
XL 27–28.5

Outerwear (Jackets, Coats)

Fit is driven by chest measurement — size up if layering over sweaters.

Size Height (in) Chest (in)
6X–7 / S 46–51 25.5–27
8 / M 51–53 27–28
10–12 / L 54–59 28.5–31
14–16 / XL 60–65 31.5–34

Swim

Fit is driven by chest and waist together. Suits run true to size.

Size Height (in) Chest (in) Waist (in)
4 / XXS 39–42 23 21.5
5–6 / S 42–48 24–25 22–22.5
7–8 / M 48–53 26–28 23–24
10–12 / L 54–59 28.5–31 25–26

Measurements for baby and toddler sizes, and sizes 2, 3, and 6X, are typical industry estimates for these ages, since exact measurements can vary slightly by style.

Customers are saying

4.69 ★ (42)
Verified

A reliable wardrobe essential, the Thermal Long Sleeve Tee in Heather Grey by Fire House brings everyday comfort to her cooler-weather wardrobe. The classic heather grey shade makes it easy to pair with her favorite jeans, leggings, skirts, or layered outfits.

Made with soft, comfortable fabric, this thermal-inspired long sleeve tee is designed for versatile everyday wear. Its simple style makes it an easy layering piece while keeping her outfit casual, polished, and ready for the day.

Key Features:

  • Soft, comfortable fabric
  • Long sleeve design for cooler days
  • Breathable feel for everyday comfort
  • Boutique-quality construction
  • Comfortable fit for easy movement
  • Versatile heather grey color
  • Easy to layer under jackets, sweaters, or hoodies
  • Simple design that pairs with a variety of bottoms

Perfect For:

  • Everyday wear
  • School
  • Playdates
  • Family outings
  • Fall
  • Winter
  • Layered outfits
  • Weekend wear

The Heather Grey Thermal Long Sleeve Tee is a versatile girls' boutique long sleeve shirt that offers timeless style and everyday comfort. It's an essential layering piece for building practical and fashionable outfits throughout the cooler seasons.

Frequently asked questions

Got questions about shopping with So So Dressed?
We’ve answered some of the most common ones to help you dress your little trendsetters confidently!


SoSo Dressed offers a wide range of sizes for babies, toddlers, and kids—typically from 12 months up to 14 years, depending on the brand and style. Each product page lists the available sizes for that item.

Every product includes a brand-specific size chart to help you choose accurately. Because kids grow quickly and sizing varies by brand, we recommend measuring your child and comparing it to the chart. If you’re unsure or between sizes, we suggest sizing up for comfort and longer wear.

Yes. At SoSo Dressed, we carefully curate brands known for their soft, high-quality, and skin-friendly fabrics. Many of our items are made with breathable cotton blends and materials designed to be gentle on sensitive skin.

Most items at SoSo Dressed are made from high-quality, pre-shrunk or shrink-resistant fabrics. However, minimal shrinkage can occur with certain cotton-based materials if washed or dried on high heat. For best results, we recommend following the care label and using cold water + low-heat or air-drying to maintain the original fit and quality.

Most of our clothing is machine washable for easy everyday care. Specific washing instructions may vary by item, so we recommend checking the care label on each product for best results.