Riding Gear
- Alpinestars state the boot is anatomically engineered for a dedicated female fit, with an ergonomic last that streamlines the forefoot for control on the bike's controls.
Microfiber upper
- The main upper is microfiber, which Alpinestars specify for durability, abrasion resistance and flexibility.
TPU lateral ankle brace
- Alpinestars' ankle brace protection system, providing bio-mechanical support and protection between the lateral top calf, shin and ankle, and protecting the Achilles and ankle from impact.
Dual-density TPU ankle protectors
- Positioned between the upper on the medial side and the padded lining.
Race-derived TPU shin plate
- Alpinestars state it delivers impact and abrasion resistance in a more compact design so the boot fits easily under pants.
TPU shifter zone
- On the lower medial side.
Rear calf TPU bridge
- Added by Alpinestars to reinforce protection and support at the back of the calf.
Replaceable dual-density TPU toe sliders
- Screw-in assembly, covering the outer toe area.
Front and back flex zones
- Textile over-injected on 3D mesh with soft TPU, for impact and abrasion resistance with natural fore-and-aft foot movement.
Lace-Lock System
- Alpinestars' closure in advanced polymer resin, with a medial side entry using an elastic-mounted zipper and a wide hook-and-loop closure.
Ergonomic front gaiter
- An elastic gaiter at the front for a precise fit.
Removable anatomic footbed
- Dual-compound EVA with Lycra on top, over an internal insole with an integrated shank reinforcement for arch support.
Rubber sole
- A lightweight rubber compound, which Alpinestars specify for grip on the pedal box.
Specs
| Certification | CE certified to EN 13634:2017 (motorcycle protective footwear) |
| Fit | Women's — Alpinestars Stella, dedicated female-specific last |
| Upper | Microfiber |
| Ankle | TPU lateral ankle brace plus dual-density TPU ankle protectors |
| Shin | Race-derived TPU shin plate, compact profile to sit under riding pants |
| Shifter pad | TPU, lower medial side |
| Calf | Rear TPU bridge |
| Toe slider | Replaceable dual-density TPU, screw-in |
| Flex zones | Front and back, textile over-injected on 3D mesh with soft TPU |
| Closure | Lace-Lock System, medial elastic-mounted zip, wide hook-and-loop closure, front elastic gaiter |
| Footbed | Removable dual-compound EVA with Lycra top, internal insole with shank reinforcement |
| Outsole | Lightweight rubber compound |
| Color | Black/White/Diva Pink |
| Sizes | EU 36–43 / US 3½–9 — the size selector shows what we can supply today |
| Manufacturer part number | 2223125-1832 |
About the certification: EN 13634:2017 sets two performance levels, Level 1 and Level 2. Alpinestars print the level a boot reached on the boot's own label rather than publishing it per model, so read the label inside the boot if the level matters to you.
Size Chart
Alpinestars' own chart for the SMX-6. Measure the longest part of your foot and compare it against the comfort size for the column you are looking at — this is the more reliable route than converting a street shoe size, because the US column here is the one Alpinestars publish for this boot and it will not always match the US size you buy trainers in.
EU — US — JPN — Foot length (comfort size)
| 36 | 3½ | 22.5 | 23.1 cm / 9.09 in |
| 37 | 4 | 23 | 23.7 cm / 9.33 in |
| 38 | 5 | 24 | 24.4 cm / 9.60 in |
| 39 | 6 | 25 | 25.1 cm / 9.88 in |
| 40 | 6½ | 25.5 | 25.7 cm / 10.11 in |
| 41 | 7½ | 26 | 26.4 cm / 10.39 in |
| 42 | 8 | 26.5 | 27.1 cm / 10.66 in |
| 43 | 9 | 27.5 | 27.7 cm / 10.90 in |
Alpinestars' own fitting advice is to try boots on with the socks you actually ride in, fasten everything, then walk, bend and sit on a bike before deciding. They also note that a new boot feels stiff until it is broken in, so a fit that is slightly tight when new is a better bet than one that is comfortable new and slack later.
Care Instructions
Alpinestars' guidance for their road and MX footwear: clean dirty boots under running water with a sponge, and do not pressure-wash them. Never use strong cleaning agents or solvents — they can weaken the materials and attack the colour and finish of the plastic. After washing, wipe the surface water off with a cloth and lay the boots on their sides to dry naturally. Do not dry them next to a fire or a radiator. Between rides keep them fastened so they hold their shape, and store them in their box in a well-ventilated place — not in a cellar or a plastic bag, where mould can take hold. Check that the sole still has tread and that the fasteners still work, and after a crash inspect the boots thoroughly. Alpinestars say a boot that can no longer be fastened properly, or that has holes or tears, must be replaced, and that the user should not modify or repair it.
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Speak to one of our experts today:
469-890-0123
ALPINESTARS
SKU:2223125-1832
Description:Alpinestars Stella SMX-6 V3 Boots – Black/White/Diva Pink
Product Overview
This is a women’s boot. Stella is Alpinestars’ women’s line, and they state the SMX-6 V3 is built on a dedicated female fit rather than a men’s boot in smaller sizes — the upper is engineered to conform to the contours of the foot, which Alpinestars say also improves walking comfort.
Alpinestars describe it as a track and street performance boot built with race-derived technology and protective materials. The upper is microfiber; the front and back flex zones are textile over-injected on 3D mesh with soft TPU. Protection is a TPU lateral ankle brace between the top calf, shin and ankle, dual-density TPU ankle protectors, a compact race-derived TPU shin plate that Alpinestars note is shaped to fit under riding pants, a TPU shifter zone, and a rear calf TPU bridge. The toe sliders are replaceable.
Key Technology & Design
Female-specific fit
- Alpinestars state the boot is anatomically engineered for a dedicated female fit, with an ergonomic last that streamlines the forefoot for control on the bike’s controls.
Microfiber upper
- The main upper is microfiber, which Alpinestars specify for durability, abrasion resistance and flexibility.
TPU lateral ankle brace
- Alpinestars’ ankle brace protection system, providing bio-mechanical support and protection between the lateral top calf, shin and ankle, and protecting the Achilles and ankle from impact.
Dual-density TPU ankle protectors
- Positioned between the upper on the medial side and the padded lining.
Race-derived TPU shin plate
- Alpinestars state it delivers impact and abrasion resistance in a more compact design so the boot fits easily under pants.
TPU shifter zone
- On the lower medial side.
Rear calf TPU bridge
- Added by Alpinestars to reinforce protection and support at the back of the calf.
Replaceable dual-density TPU toe sliders
- Screw-in assembly, covering the outer toe area.
Front and back flex zones
- Textile over-injected on 3D mesh with soft TPU, for impact and abrasion resistance with natural fore-and-aft foot movement.
Lace-Lock System
- Alpinestars’ closure in advanced polymer resin, with a medial side entry using an elastic-mounted zipper and a wide hook-and-loop closure.
Ergonomic front gaiter
- An elastic gaiter at the front for a precise fit.
Removable anatomic footbed
- Dual-compound EVA with Lycra on top, over an internal insole with an integrated shank reinforcement for arch support.
Rubber sole
- A lightweight rubber compound, which Alpinestars specify for grip on the pedal box.
Specs
| Certification | CE certified to EN 13634:2017 (motorcycle protective footwear) |
| Fit | Women’s — Alpinestars Stella, dedicated female-specific last |
| Upper | Microfiber |
| Ankle | TPU lateral ankle brace plus dual-density TPU ankle protectors |
| Shin | Race-derived TPU shin plate, compact profile to sit under riding pants |
| Shifter pad | TPU, lower medial side |
| Calf | Rear TPU bridge |
| Toe slider | Replaceable dual-density TPU, screw-in |
| Flex zones | Front and back, textile over-injected on 3D mesh with soft TPU |
| Closure | Lace-Lock System, medial elastic-mounted zip, wide hook-and-loop closure, front elastic gaiter |
| Footbed | Removable dual-compound EVA with Lycra top, internal insole with shank reinforcement |
| Outsole | Lightweight rubber compound |
| Color | Black/White/Diva Pink |
| Sizes | EU 36–43 / US 3½–9 — the size selector shows what we can supply today |
| Manufacturer part number | 2223125-1832 |
About the certification: EN 13634:2017 sets two performance levels, Level 1 and Level 2. Alpinestars print the level a boot reached on the boot’s own label rather than publishing it per model, so read the label inside the boot if the level matters to you.
Size Chart
Alpinestars’ own chart for the SMX-6. Measure the longest part of your foot and compare it against the comfort size for the column you are looking at — this is the more reliable route than converting a street shoe size, because the US column here is the one Alpinestars publish for this boot and it will not always match the US size you buy trainers in.
EU — US — JPN — Foot length (comfort size)
| 36 | 3½ | 22.5 | 23.1 cm / 9.09 in |
| 37 | 4 | 23 | 23.7 cm / 9.33 in |
| 38 | 5 | 24 | 24.4 cm / 9.60 in |
| 39 | 6 | 25 | 25.1 cm / 9.88 in |
| 40 | 6½ | 25.5 | 25.7 cm / 10.11 in |
| 41 | 7½ | 26 | 26.4 cm / 10.39 in |
| 42 | 8 | 26.5 | 27.1 cm / 10.66 in |
| 43 | 9 | 27.5 | 27.7 cm / 10.90 in |
Alpinestars’ own fitting advice is to try boots on with the socks you actually ride in, fasten everything, then walk, bend and sit on a bike before deciding. They also note that a new boot feels stiff until it is broken in, so a fit that is slightly tight when new is a better bet than one that is comfortable new and slack later.
Care Instructions
Alpinestars’ guidance for their road and MX footwear: clean dirty boots under running water with a sponge, and do not pressure-wash them. Never use strong cleaning agents or solvents — they can weaken the materials and attack the colour and finish of the plastic. After washing, wipe the surface water off with a cloth and lay the boots on their sides to dry naturally. Do not dry them next to a fire or a radiator. Between rides keep them fastened so they hold their shape, and store them in their box in a well-ventilated place — not in a cellar or a plastic bag, where mould can take hold. Check that the sole still has tread and that the fasteners still work, and after a crash inspect the boots thoroughly. Alpinestars say a boot that can no longer be fastened properly, or that has holes or tears, must be replaced, and that the user should not modify or repair it.
