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These waterproof motorcycle pants are the perfect choice for anyone who wants to ride safely and comfortably in a wide range of weather conditions. Thanks to the robust Ripstop-CORDURA® materials and a waterproof and windproof membrane, the trousers provide reliable protection from the wet while offering excellent freedom of movement. The strategically placed ventilation zips on the thighs allow air to circulate comfortably in warmer temperatures, while the adjustable knee fit and sporty leg shape ensure fatigue-free riding. Equipped with flexible Nucleon Flex Plus protectors on the knees and Bio-Flex hip protectors, the RX-3 Waterproof trousers offer a high standard of protection.
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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.