Fit and Care

Hot Chillys has an athletic and close-to-body without feeling restrictive.

  • Trim / performance fit – designed to sit close to the skin for moisture-wicking and layering
  • Comfort stretch – moves with you, not tight like compression gear
  • True-to-size for most – but slightly more fitted than casual apparel
  • Layer-friendly – thin enough to sit cleanly under mid-layers without bunching

Base Layer Fit Types

Illustration of human figures (man, women, and youth) wearing a Hot Chillys type base layer, demonstrating a close, body-contouring fit intended for layering without bulk

Body Fit Base Layers

Body Fit delivers a streamlined, next-to-skin feel. It contours closely to the body for maximum thermal efficiency and moisture management. Ideal as a base layer, it provides warmth without added bulk and is designed to move seamlessly under midlayers and outerwear.

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Illustrated figures of a man, woman, and youth wearing Hot Chillys base layers with an active fit, designed to contour to the body while allowing full range of motion

Active Fit Base Layers

Active Fit is built for movement. It offers a closer, body-skimming silhouette that follows your shape without restricting mobility. Designed for high-output activity, it reduces bulk, layers easily, and stays comfortably in place during skiing, running, training, or any cold-weather performance use.

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Drawing of a man, woman, and youth in Hot Chillys base layers, depicting a relaxed fit with extra room through the legs, torso and sleeves for comfort and easy movement.

Relaxed Fit Base Layers

Relaxed Fit offers easy comfort with more room to move. It provides a looser silhouette that doesn’t cling to the body, making it ideal for everyday wear, casual layering, or lower-intensity activities where comfort and breathability are key.

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Hot Chillys Size Charts

Men's Tops Size Chart

Men's tops size chart showing chest measurements in inches and centimeters.
Measurement S M L XL XXL
Chest (in) 35–37 38–40 42–44 46–48 50–52
Chest (cm) 89–94 95–101 102–112 113–122 123–132

Men's Bottoms Size Chart

Men's bottoms size chart showing waist measurements in inches and centimeters.
Measurement S M L XL XXL
Waist (in) 29–31 32–34 36–38 40–42 44–46
Waist (cm) 74–79 80–86 87–96 97–106 107–117

Men's Sock Size Chart

Men's sock size chart showing US and EU shoe size equivalents by sock size.
Sock Size M L XL
US Shoe Size 6–8½ 9–11½ 12–14
EU Shoe Size 36–42 42–46 47–50

Women's Tops Size Chart

Women's tops size chart showing US size, chest measurements in inches and centimeters.
Measurement XS S M L XL
Size (US) 0–2 4–6 8–10 12–14 16–18
Chest (in) 32–33 34–35 36–37 38½–40 42–44
Chest (cm) 81–84 85–89 90–94 95–101 102–112

Women's Bottoms Size Chart

Women's bottoms size chart showing US size, waist, and hip measurements in inches and centimeters.
Measurement XS S M L XL
Size (US) 0–2 4–6 8–10 12–14 16–18
Waist (in) 25–26 27–28 29–30 31–34 35–37
Waist (cm) 63–66 67–71 72–76 77–84 85–94
Hips (in) 34½–35½ 36½–37½ 38½–39½ 40–42½ 44½–46½
Hips (cm) 87–90 91–95 96–100 101–108 109–118

Women's Sock Size Chart

Women's sock size chart showing US and EU shoe size equivalents by sock size.
Sock Size S M L
US Shoe Size 4–7 7–9½ 10–12
EU Shoe Size 30–36 36–42 42–46

Youth Size Chart

Youth size chart showing size, height, and waist measurements in inches and centimeters.
Measurement XXS XS S M L XL
Size (Age) 3–4 4–6 6–8 8–10 12–14 14–16
Height (in) 40–42 43–47 48–52 53–56 57–60 61–64
Height (cm) 101–108 109–121 122–133 134–143 144–153 154–163
Waist (in) 21½–22½ 22½–23½ 23½–25 25–26½ 26½–28 28–30
Waist (cm) 54–57 57–60 60–63 63–67 67–71 71–76

Toddler Size Chart

Toddler size chart showing height and weight ranges in inches, centimeters, pounds, and kilograms.
Measurement 2T 3T 4T
Height (in) 32–35 36–39 40–43
Height (cm) 81–90 91–99 101–109
Weight (lbs) 27–31 32–35 36–40
Weight (kg) 12½–14 14½–16 16½–18

Youth Sock Size Chart

Youth sock size chart showing Little Kids and Big Kids sizes with US and EU shoe conversions.
Little Kids Big Kids
Size XS S M L
Sock Size 5–6½ 6–8 7–9 9–11
US Shoe Size 6–8½ 9–13 13–4 4–7
EU Shoe Size 22–25 26–30 30–36 36–29

Mask Size Chart

Mask size chart showing hat size ranges and head circumference measurements for youth and adult sizing.
Measurement Youth S/M Youth L/XL Adult S/M Adult L/XL
Hat Size 6 – 6½ 6½ – 6⅞ 6⅞ – 7¼ 7¼ – 7¾
Head Circumference (in) 20 – 20¾ 20¾ – 21¼ 21¼ – 22¾ 22¾ – 24¼

Washing Instructions

Machine wash separately on cold with like colors. Tumble dry low. Do not iron.

Wash before wearing. Wash between uses.

Do not use bleach or fabric softeners. Bleach may harm the material and fabric softeners reduce the moisture wicking ability and actually make it harder to wash out sweat and body odor in an althetic garment.

Any detergent residue that is meant to stay on the fabric like brighteners or scents will reduce the effectiveness of Hot Chillys moisture wicking properties.