Castelli Diluvio UL 2 – Keep Your Feet Warm, Even in the Rain

Cold, wind, wet roads: keep riding without sacrificing foot comfort.

Discover the Castelli Diluvio UL 2, neoprene cycling shoe covers designed to protect your feet from the cold, wind, and moisture.

With their 2 mm thick neoprene, waterproof YKK zipper, and low-seam design, they provide particularly effective protection for autumn and winter rides.

Suitable for road and gravel cycling shoes, the Diluvio UL 2 are ideal for cyclists and triathletes who want to continue training when weather conditions become challenging.

Key Features of the Castelli Diluvio UL 2

• 2 mm neoprene: thermal insulation and protection from water spray.

• Excellent wind protection: reduces foot cooling while cycling.

• Low-seam design: reduces water entry points.

• Waterproof YKK zipper at the back: makes them easier to put on and provides protection.

• Adjustable Velcro strap under the foot: ensures a precise fit for different shoes.

• Road and gravel compatibility: designed to fit a variety of cycling shoes.

• Reflective logo at the back: improves visibility in low light.

• Recommended for temperatures from 4 to 15°C: perfect for training in cool and damp weather.

• Regular fit: comfortable, snug protection.

2 mm neoprene: warmth and protection from the elements

The main advantage of the Castelli Diluvio UL 2 is their 2 mm neoprene construction.

This material provides effective thermal insulation and helps limit wind and moisture penetration.

It helps retain more heat around the shoes when temperatures drop, especially during long rides or exposed descents.

The neoprene also remains flexible, making it easier to fit around different cycling shoes.

Effective protection on wet roads

The Diluvio UL 2 were developed for both dry and wet conditions.

Castelli uses a construction with a limited number of seams to reduce the risk of water penetration.

This design improves protection against road spray and moderate showers.

As with most cycling shoe covers, however, water may enter through the ankle or sole openings during prolonged rain.

They therefore offer excellent resistance to wet conditions without guaranteeing complete waterproofing.

Waterproof YKK zipper

The Castelli Diluvio UL 2 features a waterproof YKK zipper at the back.

This zipper makes them easier to put on and take off while limiting water penetration through the zip.

It also allows for a precise fit around the shoe and ankle.

An essential feature for equipment intended for regular autumn and winter training.

Velcro strap under the foot: a precise fit

An adjustable Velcro strap is integrated under the sole.

It allows you to adjust the shoe covers to the shape and volume of your cycling shoes.

This design helps keep the Diluvio UL 2 properly positioned while pedaling.

It also makes them easier to use with different road and gravel shoe models.

Compatible with road and gravel shoes

The Castelli Diluvio UL 2 were designed to fit both road cycling shoes and gravel shoes.

The opening under the sole and adjustable strap leave the areas needed for cleats clear.

For particularly bulky gravel shoes, however, check compatibility and size before purchasing.

Ideal equipment for temperatures between 4 and 15°C

Castelli recommends the Diluvio UL 2 for temperatures between 4 and 15°C.

They are particularly suited to the following situations:

• Autumn and winter cycling training.

• Rides