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Filled with lightweight, 100% recycled body insulation, the Baby ThermoBall™ One-Piece is the ideal all-in-one layer for their first winters. With an attached hood, fold-over mitts and booties, plus a water-repellent finish, they’ll have the coverage they need for new adventures in the outdoors. We’ve also updated our youth sizing. Please use our sizing guide to find your best fit.
|
Height |
Weight |
Chest |
Waist |
Hip |
Arm Length |
Inseam |
|
|
XS (6) |
46-47 in |
44-50 lbs |
23.5-24.5 in |
22-23 in |
24.5-25.5 in |
23 in |
20-21 in |
|
S (7/8) |
49-51 in |
51-65 lbs |
25-27 in |
24-25 in |
26-28 in |
25.5 in |
22-24 in |
|
M (10) |
52.5-55.5 in |
66-87 lbs |
27.5-29 in |
25-26 in |
29-30 in |
27 in |
25-26 in |
|
L (12) |
57.5-59.5 in |
88-105 lbs |
29.5-30.5 in |
26.5-27.5 in |
30.5-32 in |
28.5 in |
27-28 in |
|
XL (14-16) |
61-63 in |
106-125 lbs |
31.5-33.5 in |
28-30 in |
32-35 in |
31.5 in |
29-30.5 in |
|
XXL (18-20) |
66-68 in |
126-140 lbs |
34.5-36.5 in |
31-33 in |
35.5-38 in |
33.5 in |
30.5-31.5 in |
Boys Gloves
|
Hand Circumference |
Length |
|
|
XS |
5 in |
5 in |
|
S |
5.5 in |
5.5 |
|
M |
6 in |
6 in |
|
L |
6.5 in |
6.5 in |
|
XL |
7 in |
7 in |
Boys Hats
|
Head Circumference |
|
|
S (2T-4T) |
19.5-20.5 in |
|
M (5-10) |
20.5-21.5 in |
|
L (10+) |
21.5-22.5 in |
Girls Apparel
|
Height |
Weight |
Chest |
Waist |
Hip |
Arm Length |
Inseam |
|
|
XS (6) |
46-47.5 in |
44-50 lbs |
23.5-24.5 in |
21.5-22.5 in |
24.5-25.5 in |
23 in |
21-22 in |
|
S (7/8) |
49-52.5 in |
51-65 lbs |
25-27 in |
22.5-23.5 in |
26.5-28.5 in |
25 in |
23-24.5 in |
|
M (10) |
54-56.5 in |
66-85 lbs |
28-29 in |
23.5-25 in |
29.5-30.5 in |
26.5 in |
25.5-26.5 in |
|
L (12) |
58-59.5 in |
88-100 lbs |
29.5-30.5 in |
24.5-25.5 in |
31.5-32.5 in |
28 in |
27-28 in |
|
XL (14-16) |
61-63 in |
101-115 lbs |
31.5-33.5 in |
26-28 in |
33.5-36 in |
30 in |
28.5-29.5 in |
|
XXL (18-20) |
64-65 in |
116-130 lbs |
34.5-36.5 in |
28.5-30.5 in |
36.5-39 in |
32 in |
29.5-30.5 in |
Gloves
|
Hand Circumference |
Length |
|
|
XS |
5 in |
5 in |
|
S |
5.5 in |
5.5 |
|
M |
6 in |
6 in |
|
L |
6.5 in |
6.5 in |
|
XL |
7 in |
7 in |
Girls Hats
|
Head Circumference |
|
|
S (2T-4T) |
19.5-20.5 in |
|
M (5-10) |
20.5-21.5 in |
|
L (10+) |
21.5-22.5 in |
Little Kids Apparel
|
Height |
Weight |
Waist |
Arm Length |
Inseam |
|
|
2T |
33-36 in |
29-32 lbs |
20-21 in |
17.5 in |
13.5-14.5 in |
|
3T |
36-39 in |
32-37 lbs |
21-22 in |
18.5 in |
15-16 in |
|
4T |
39-42 in |
37-41 lbs |
22-23 in |
19.5 in |
16.5-17.5 in |
|
5 |
42-44 in |
41-45 lbs |
23-24 in |
21 in |
18-19 in |
|
6 |
45-47 in |
45-48 lbs |
23-25 in |
22 in |
19.5-21 in |
|
7 |
48-53 in |
48-52 lbs |
24-26 in |
23 in |
21.5-23 in |
Little Kids Gloves
|
Age |
Length |
|
|
XS |
4T-5 yrs |
5.1 in |
|
S |
6-7 yrs |
5.3 in |
|
M |
8-9 yrs |
5.7 in |
|
L |
10-11 yrs |
6.1 in |
|
XL |
12-13 yrs |
6.5 in |
Little Kids Mitts
|
Age |
Length |
|
|
XXS |
2T-3T yrs |
4.9 in |
|
XS |
4T-5 yrs |
5.1 in |
|
S |
6-7 yrs |
5.3 in |
|
M |
8-9 yrs |
5.7 in |
|
L |
10-11 yrs |
6.1 in |
|
XL |
12-13 yrs |
6.5 in |
Little Kids Hats
|
Head Circumference |
|
|
S (2T-4T) |
19.5-20.5 in |
|
M (5-10) |
20.5-21.5 in |
|
L (10+) |
21.5-22.5 in |
Baby Apparel
|
Height |
Weight |
Waist |
|
|
0-3M |
22-25 in |
10-15 lbs |
17-18 in |
|
3-6M |
25-28 in |
15-20 lbs |
18-19 in |
|
6-12M |
28-31 in |
20-25 lbs |
19-20 in |
|
12-18M |
31-33 in |
25-30 lbs |
20-21 in |
|
18-24M |
33-35 in |
30-35 lbs |
21-22 in |
Baby Mitts
|
Length |
|
|
0-6M |
4.5 in |
|
6-12M |
4.75 in |
Baby Hats
|
Head Circumference |
|
|
0M-6M |
15.5-17.5 in |
|
6M-24M |
17.5-20 in |
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Good coat
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Good quality
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
I love this ThermoBall™ One-Piece jacket on my little one! This jacket is super stylish, it's very cozy and keeps my baby warm. It's true to size; our little one is 14 months old and wears a size 12-18mo. We can also layer clothes for him underneath it.
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Love it
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
I recently purchased the North Face Baby Thermoball One-Piece for my little one, and I couldn't be happier with this choice! My kid has only used it twice on freezing days, but they stayed nice and warm each time. One of the standout features of this one-piece is the fold-over mitts at the sleeve cuffs and booties at the bottom hem. These thoughtful additions ensure that my baby's hands and feet stay cozy without needing extra accessories. It's a perfect outfit for those chilly outings, whether you need something to keep in the car for unexpected cold snaps or plan to play in the snow. Overall, the Thermoball One-Piece is a fantastic investment for keeping your baby warm and comfortable during winter. I highly recommend it to any parent looking for reliable cold-weather gear!
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Grandson stays warm!
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Works great keeps her warm even during temperatures below zero
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Perfect for 18month old playing / walking in snow in Big Sky Montana
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
Awesome snow suit!
Verified Buyer
Reviewed at
Comments about Baby ThermoBall™ One-Piece
I love this fits well true to size
