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The RT-8 GTX boot from Alpinestars is the ideal companion for all touring riders who are out and about in all weathers. Thanks to the Gore-Tex membrane, the boot is waterproof and breathable, ensuring optimum comfort even on long tours. The modern design combines durable material and a new sole construction inspired by Alpinestars performance footwear for unsurpassed comfort and safety - both on and off the bike. The boot is also designed to be so compact that it fits effortlessly under any pair of trousers.
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.