QUILO X4 BOOT Recommended Temperature: down to -20 °C / -5 °F

Since its launch in 2018, the QUILO from Blivet Sports has become the ultimate choice for winter cyclists seeking comfort, warmth, and performance.

The 2025 version – QUILO X4 – marks a major evolution. Completely redesigned, it pushes the limits of winter cycling boot design. Our goal: increase thermal protection without adding weight or compromising its unique style. The result: a more mature, more technical shoe, while remaining the lightest in its category.

Thermal Performance & Protection

• 3M™ Thinsulate™ 400 g insulation — double the previous generation, providing enhanced warmth while keeping the legendary lightness of the QUILO.
• New Blivet Sports THEREX membrane (10K mm / 10K g/m²) — laminated to the inner fabric, offering exceptional waterproofing and optimal breathability during intense activity.

Comfort & Control

The Vibram® Wolftrax® sole ensures exceptional grip, enhanced stability, and power transfer without compromise. The LISZT AIR TOEBOX provides a generous 4E+ toe volume, keeping your feet warm and away from cold surfaces. The dual independent lacing system allows precise adjustment, while the calf strap (21 cm total height) effectively blocks snow.

Key New Features

• 3M™ Thinsulate™ 400 g insulation for maximum warmth
• New THEREX membrane (10K / 10K) for perfect waterproof/breathable balance
• 360° rubber band for superior durability
• Internal heel counter for improved foot stability
• New cuts and surface materials, smooth lines, and technical details

Technical Specifications

Vibram® XS Trek sole + high-thermal-resistance EVA insert

LISZT AIR TOEBOX: 4E+ volume

• Dual quick-lace system with automatic lock
• Tongue and heel loops for quick on/off
• Multi-layer removable insole: 70% natural wool
• Calf strap + gaiter loop
• 360° reflective strips
• Compatible with 2-bolt MTB clip pedals and standard platform pedals