Bicycle Helmet nils extreme MT311 White Size S (52–56 cm)

The nils extreme MT311 White Size S (52–56 cm) is a bicycle helmet designed for everyday cycling and urban rides. It combines a hard outer shell with internal padding to provide basic impact protection and wearer comfort. The helmet fits head circumferences from 52 to 56 centimetres and includes an adjustable retention system and straps to secure a stable fit during short commutes, leisure rides and city cycling.

Advantages

The hard outer shell increases resistance to abrasion and distributes impact forces across the helmet surface, while the internal padding absorbs shocks and improves comfort. The adjustable fit system enables quick size tuning for a snug fit within the 52–56 cm range. Integrated ventilation channels support air circulation to reduce heat build-up during typical urban use. Lightweight construction reduces neck strain on short rides.

Suitable for

• Daily commuting and city cycling
• Leisure and fitness rides on paved routes
• Short errands and multi-stop urban trips
• Beginners and casual cyclists seeking basic protection

Key specifications

• Color: white
• Size range: 52–56 cm head circumference (Size S)
• Construction: hard outer shell with internal padding
• Fit adjustment: adjustable retention system and chin straps
• Ventilation: basic ventilation channels
• Intended use: urban and everyday cycling

How to use

Place the helmet on your head so it sits level and covers the forehead without tilting back. Adjust the retention system until the helmet feels snug but comfortable, then fasten and tighten the chin strap so two fingers fit between the strap and your chin. Check that the helmet does not move excessively when you shake your head. Replace the helmet if it sustains a significant impact or shows visible damage.

Usage recommendations

For optimal protection, ensure the helmet size matches your head circumference and perform a fit check before each ride. Keep the helmet clean and dry, avoid using solvents or abrasive cleaners, and store it away from direct sunlight and extreme temperatures. Follow local safety regulations and replace the helmet after any major impact or after several years of regular use, according to manufacturer guidance.