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The Stella SMX-6 v3 boots from Alpinestars offer an innovative combination of safety, comfort and fit tailored specifically for women. With an advanced microfiber upper construction, they offer excellent protection, flexibility and abrasion resistance, while a new flex zone design ensures natural movement. The biomechanical ankle protection system and TPU reinforcements provide reliable impact protection, making them ideal boots for riders who are out on the track or road. Comfort is enhanced by the lace-lock system and the anatomically shaped sole.
The images may differ slightly from the actual product.
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Alpinestars Size Chart
Note: All measurements are body measurements in cm and are intended as a guide. Not all Alpinestars models are available in all sizes. Please check the selectable sizes directly on the product page.
Men's Apparel
Jackets, Pants, Suits and Sportswear
| Euro Size | US Size | US Pant Size | Chest (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inseam (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|
| 40 | 30 | 24 | 78–82 | 64–68 | 79–83 | 48–49 | 71–72 | 49–50 | 150–156 |
| 42 | 32 | 26 | 82–86 | 68–72 | 83–87 | 50–51 | 73–74 | 51–52 | 157–163 |
| 44 | 34 | 28 | 86–90 | 72–76 | 87–91 | 52–53 | 75–76 | 53–54 | 164–167 |
| 46 | 36 | 30 | 90–94 | 76–80 | 91–95 | 54–55 | 77–78 | 55–56 | 168–171 |
| 48 | 38 | 32 | 94–98 | 80–84 | 95–99 | 56–57 | 79–80 | 57–58 | 172–175 |
| 50 | 40 | 34 | 98–102 | 84–88 | 99–103 | 58–59 | 81–82 | 59–60 | 176–179 |
| 52 | 42 | 36 | 102–106 | 88–92 | 103–107 | 60–61 | 83–84 | 61–62 | 180–183 |
| 54 | 44 | 38 | 106–110 | 92–96 | 107–111 | 62–63 | 85–86 | 63–64 | 184–187 |
| 56 | 46 | 40 | 110–114 | 96–100 | 111–115 | 64–65 | 87–88 | 65–66 | 188–191 |
| 58 | 48 | 42 | 114–118 | 100–104 | 115–119 | 66–67 | 89–90 | 67–68 | 192–195 |
| 60 | 50 | 44 | 118–122 | 104–108 | 119–123 | 68–69 | 89–90 | 67–68 | 192–195 |
| 62 | 52 | 46 | 122–126 | 108–112 | 123–127 | 70–71 | 91–92 | 69–70 | 196–199 |
| 64 | 54 | 48 | 126–130 | 112–116 | 127–131 | 72–73 | 91–92 | 69–70 | 196–199 |
Women's Apparel
Jackets, Pants, Suits and Sportswear
| Euro Size | International Size | US Size | US Pant Size | Chest (cm) | Bust (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inner Leg (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36 | XS | 0 | 22 | 74–80 | 78–84 | 58–64 | 82–88 | 50–52.5 | 72–74.5 | 50–52.5 | 157–162.5 |
| 38 | S | 2 | 24 | 80–86 | 84–90 | 64–70 | 88–94 | 52.5–55 | 74.5–77 | 52.5–55.5 | 162.5–168.5 |
| 40 | M | 4 | 26 | 86–90 | 90–94 | 70–74 | 94–98 | 55–57 | 77–80 | 55.5–58 | 168.5–172.5 |
| 42 | L | 6 | 28 | 90–94.5 | 94–98.5 | 74–78.5 | 98–102.5 | 57–59.5 | 80–82 | 58–60 | 172.5–176.5 |
| 44 | XL | 8 | 30 | 94.5–99 | 98.5–103 | 78.5–83 | 102.5–107 | 59.5–61.5 | 82–83.5 | 60–61.5 | 176.5–180 |
| 46 | 2XL | 10 | 32 | 99–104 | 103–108 | 83–88 | 107–112 | 61.5–64 | 83.5–84.5 | 61.5–62.5 | 180–182.5 |
| 48 | 3XL | 12 | 34 | 104–109 | 108–113 | 88–93 | 112–117 | 64–66.5 | 84.5–86 | 62.5–64 | 182.5–185 |
| 50 | 4XL | 14 | 36 | 109–114 | 113–118 | 93–98 | 117–122 | 66.5–69 | 86–87 | 64–65 | 185–188 |
Note: The official women's measurement values are complete up to Euro 50 in the source. Larger sizes should be checked directly on the product page.
Youth Apparel
Kids and Youth Sizes
| Size | International Size | US Size | Age | Chest (cm) | Waist (cm) | Hip (cm) | Thigh (cm) | Inseam (cm) | Outer Arm (cm) | Height (cm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 120 | S | 22 | 6 | 60.5–65.5 | 54–58 | 68–72 | 40–42 | 51.1–56.5 | 40–44 | 120–130 |
| 130 | M | 24 | 7–8 | 65.5–70.5 | 58–62 | 72–76 | 42–44 | 56.5–61.5 | 44–48 | 130–140 |
| 140 | L | 26 | 9–10 | 70.5–75.5 | 62–66 | 75–80 | 44–46 | 61.5–66.5 | 48–52 | 140–150 |
| 150 | XL | 28 | 11–12 | 75.5–80.5 | 66–70 | 80–84 | 46–48 | 66.5–71.5 | 52–56 | 150–160 |
Footwear and Boots
Men's Shoes – Monza, Tahoe, Primate
| EU | US | JPN |
|---|---|---|
| 35 | 3.5 | — |
| 36 | 4.5 | — |
| 37 | 5 | — |
| 38 | 6 | — |
| 39 | 7 | — |
| 40 | 7.5 | — |
| 41 | 8.5 | — |
| 42 | 9 | — |
| 43 | 10 | — |
| 44 | 11 | — |
| 45 | 11.5 | — |
| 46 | 12.5 | — |
| 47 | 13 | — |
| 48 | 14 | — |
| 49 | 14.5 | — |
| 50 | 15.5 | — |
Men's Shoes – General Models
| EU | US | JPN |
|---|---|---|
| 35.5 | 4 | 22 |
| 36 | 4.5 | 22.5 |
| 37 | 5 | 23 |
| 37.5 | 5.5 | 23.5 |
| 38 | 6 | 24 |
| 38.5 | 6.5 | 24.5 |
| 39 | 7 | 25 |
| 40 | 7.5 | 25.5 |
| 40.5 | 8 | 25.5 |
| 41 | 8.5 | 26 |
| 42 | 9 | 26.5 |
| 42.5 | 9.5 | 27 |
| 43 | 10 | 27.5 |
| 43.5 | 10.5 | 28 |
| 44 | 11 | 28.5 |
| 45 | 11.5 | 29.5 |
| 45.5 | 12 | 29.5 |
| 46 | 12.5 | 30 |
| 47 | 13 | 30.5 |
| 48 | 14 | 31.5 |
Road Racing / Touring Shoes and Boots
| EU | US | JPN |
|---|---|---|
| 36 | 3.5 | 22.5 |
| 37 | 4 | 23 |
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40 | 6.5 | 25.5 |
| 41 | 7.5 | 26 |
| 42 | 8 | 26.5 |
| 43 | 9 | 27.5 |
| 44 | 9.5 | 28.5 |
| 45 | 10.5 | 29.5 |
| 46 | 11.5 | 30 |
| 47 | 12 | 30.5 |
| 48 | 12.5 | 31.5 |
| 49 | 13.5 | 32 |
| 50 | 14 | 33 |
MX Boots
| EU | US | JPN |
|---|---|---|
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40.5 | 7 | 25.5 |
| 42 | 8 | 26.5 |
| 43 | 9 | 27.5 |
| 44.5 | 10 | 29 |
| 45.5 | 11 | 29.5 |
| 47 | 12 | 30.5 |
| 48 | 13 | 31.5 |
| 49.5 | 14 | 32.5 |
| 51 | 15 | 33.5 |
| 52 | 16 | 34.5 |
Women's Footwear
| EU | US | JPN |
|---|---|---|
| 37 | 6 | 23 |
| 38 | 7 | 24 |
| 39 | 8 | 25 |
| 41 | 9 | 26 |
| 42 | 10 | 26.5 |
Youth MX Boots
| EU | US | JPN |
|---|---|---|
| 28 | 10J | 17.5 |
| 29 | 11J | 18.5 |
| 30.5 | 12J | 19.5 |
| 32 | 13J | 20 |
| 33 | 1 | 21 |
| 34 | 2 | 21.5 |
| 35.5 | 3 | 22.5 |
| 37 | 4 | 23 |
| 38 | 5 | 24 |
| 39 | 6 | 25 |
| 40.5 | 7 | 25.5 |
| 42 | 8 | 26.5 |
Gloves
Men's Gloves
| Size | Hand Circumference (cm) |
|---|---|
| S | 17.8–20.3 |
| M | 20.3–21.6 |
| L | 21.6–22.9 |
| XL | 22.9–24.1 |
| 2XL | 24.1–25.4 |
| 3XL | 25.4–27.9 |
Women's Gloves
| Size | Hand Circumference (cm) |
|---|---|
| XS | 16.5–17.8 |
| S | 17.8–19 |
| M | 19–20.3 |
| L | 20.3–21.6 |
| XL | 21.6–22.9 |
Helmets
Head Circumference
| Size | Head Circumference (cm) |
|---|---|
| XS | 53–54 |
| S | 55–56 |
| M | 57–58 |
| L | 59–60 |
| XL | 61–62 |
| 2XL | 63–64 |
Tip: For helmets, measure the head circumference at the widest point above the eyebrows. For gloves, measure around the hand behind the knuckles, excluding the thumb.