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Stay chill this Christmas with Sigma Santa — the coolest Claus in town. This fun holiday long sleeve shirt brings the perfect mix of humor and festive style, featuring Santa in his ultimate sigma mode. Soft, durable, and comfy enough for all-day wear, it’s a holiday must-have for kids who like their Christmas spirit with a little attitude.
Made from Airlume combed and ringspun cotton, this tee is smooth, breathable, and designed to last through every laugh, party, and present.
Details:
• 100% Airlume combed and ring-spun cotton
• Athletic Heather: 90% cotton / 10% polyester
• Fabric weight: 4.2 oz/yd² (180 g/m²)
• Regular fit with classic crew neck
• Ribbed cuffs for a cozy feel
• Side-seamed construction for lasting shape
• Blank product sourced from Honduras, Nicaragua, or the US
Size Guide (Youth Sizes)
Size Typical Age Width (in) Length (in)
S 5–6 years 15¼" 20⅞"
M 7–8 years 16¼" 22⅛"
L 9–10 years 17¼" 23⅜"
If your child is between sizes, we recommend sizing up for a comfy fit that lasts longer.
Sigma Santa Youth Long Sleeve Shirt – Funny Cool Santa Christmas Tee for Kids
$28.99
Made from Airlume combed and ringspun cotton, this tee is smooth, breathable, and designed to last through every laugh, party, and present.
Details:
• 100% Airlume combed and ring-spun cotton
• Athletic Heather: 90% cotton / 10% polyester
• Fabric weight: 4.2 oz/yd² (180 g/m²)
• Regular fit with classic crew neck
• Ribbed cuffs for a cozy feel
• Side-seamed construction for lasting shape
• Blank product sourced from Honduras, Nicaragua, or the US
Size Guide (Youth Sizes)
Size Typical Age Width (in) Length (in)
S 5–6 years 15¼" 20⅞"
M 7–8 years 16¼" 22⅛"
L 9–10 years 17¼" 23⅜"
If your child is between sizes, we recommend sizing up for a comfy fit that lasts longer.
Size guide
| LENGTH (inches) | WIDTH (inches) | |
| S | 21 ⅛ | 15 ¼ |
| M | 22 ¼ | 16 ¼ |
| L | 23 ⅜ | 17 ¼ |