Alpinestars SP-X Boa Drystar Boot
Alpinestars SP-X Boa Drystar Boot
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Overview & specifications
The SP-X Boa Drystar Boots are crafted with an ergonomically optimized touring design to provide superior comfort during long rides. The waterproof and breathable Drystar® membrane ensures outstanding wet-weather protection, while the rugged, grippy sole is designed for reliable performance in all conditions, both on and off the bike.
- Main upper constructed with a combination of advanced microfiber, knitted mesh and co-injected TPU with Lycra for the optimum blend of comfort, breathability and performance
- Lateral side entry system incorporates BOA Speed Lace System technology for a quick, precise, and secure closure
- Equipped with a Drystar® liner for proven all-weather performance, remaining waterproof while still being highly breathable
- Rubber sole utilizes a special compound that provides textured grip and excellent absorption, and features an integrated support shank for an enhanced sole rigidity
- Sports sole design incorporates a high flex inner structure (lasting insole) for superior walking comfort
- TPU sliders are strategically positioned on the lateral toe-box and on the lateral calf for optimum flexion and protection
- Internal shin reinforcement layered under the upper for impact protection in a critical area
- CE certified to EN 13634:2017
MADE WITH PFAS CHEMICALS
Size & fit
Wear your usual riding socks and measure both feet from heel to longest toe while standing. Use the longer foot measurement and check the product’s own EU, UK or US size options. Let us know if you need extra width or calf room.
Use a flexible measuring tape. Keep measurements in one unit: centimetres or inches (1 inch = 2.54 cm). Enter the unit selected in the custom-size form.
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Delivery availability and shipping charges are shown at checkout. Please review our shipping policy for preparation and delivery information.
Please review our returns policy before ordering. Contact our team for help with sizing, custom orders or an existing purchase.
Questions & support
How do I choose the right size?
Measure first, then check the size options for this product. If you are between sizes or wear additional layers, contact us with your measurements before ordering.