Nucleus TH3 by Sidi

The Sidi x TheArsenale Nucleus TH3 sneaker is a certified protective sneaker that blends motorcycle-grade impact tech with everyday city styling.

The Collaboration

Italian riding brand Sidi Sport has spent decades protecting the feet of MotoGP, off-road and street riders. For this project, Sidi worked with Th3Ars3nal3 to translate that engineering into a low-top silhouette that can walk from a scooter to a dinner without changing shoes. The Nucleus TH3 is offered in a clean white and a signature yellow, and each pair ships with a complimentary Th3Ars3nal3 cap.

Materials & Fit

Cushioning is handled by Fortex Technology, Sidi's proprietary midsole system tuned for long walking comfort. Ankle protection comes from D3O, the intelligent impact-absorbing polymer used across premium moto gear. The upper adds reinforced heel and toe protection, a TPU stabilizer at the heel and a dedicated gear shift protection zone for riders who use the shoe on the bike. An asymmetrical closure with lockable laces and a fabric lace holder gives a locked-in fit; reflective laces and reflective heel inserts add visibility in low light; a rear pull ring allows quick on and off. Available exclusively for pre-order, with deliveries scheduled for 2025.

Specifications

• Builder: Sidi Sport x Th3Ars3nal3
• Type: Certified protective sneaker
• Cushioning: Fortex Technology midsole
• Ankle protection: D3O impact-absorbing insert
• Heel and toe: Reinforced protection
• Heel: TPU stabilizer, rear pull ring for quick fit
• Rider features: Gear shift protection zone
• Closure: Asymmetrical, lockable laces, fabric lace holder
• Visibility: Reflective laces and reflective heel inserts
• Colorways: White, yellow
• Availability: Pre-order, delivery 2025
• Included: Complimentary Th3Ars3nal3 cap

Discover the full sneakers collection at TheArsenale.