Bell Stratus MIPS helmet S (52-56cm) mat/gloss white/silver

The Stratus MIPS® is built on the same basic principles as Bell's Z20 professional model. It combines lightweight aerodynamic efficiency with innovative comfort technology. The refined shape offers best road performance and exceptional ventilation on long climbs and long flat sections. The integrated Float Fit adjustment system offers comfort and security in a streamlined fit and an oversized dial that is easy to operate with just one hand. Overbrow ventilation pulls in cool air at the front and forces it through an air channel matrix, preventing the head from overheating. And thanks to the adjustable No-Twist Tri-Glide system, the straps stay flat and in place no matter how hard you pedal. This model also features MIPS® (Multi-Directional Impact Protection System) technology for added protection in certain impact situations.

Fusion In-Mold Polycarbonate Shell
The EPS foam is injected into the thin microshell shell while it's still in the mold (or "mold", which explains the name) rather than molding it separately and then gluing it on later. This process was first introduced by Bell and is now the standard for all demanding helmets.

Float Fit™
Bell's most advanced helmet fitting system combines comfort and safety in an ultra-lightweight design. Float Fit™ optimizes the fit of the helmet in 2 ways - head circumference and vertical adjustment. To reduce weight and simplify usability, the guide arms enclose the back of the head in a unique way thanks to the “Float” design. This puts the helmet in an ideal position on the head. Simple, light and comfortable.

Overbrow Ventilation™
Deep air inlets above the forehead bring cooling air into the helmet, which is guided around the head through a matrix of air channels and ensures a cool helmet climate throughout

MIPS
The MIPS® safety system was developed to provide additional protection for helmets in numerous accidents. In certain impact situations, the MIPS system can reduce dangerous forces that might otherwise be transmitted to the helmet wearer's head.

1. Conventional helmets are designed and tested for a straight impact. In most cases, however, the impact is at an angle, which can cause rotational movements for the head.

2. This rotational movement can cause brain injury.

3. The low-friction shell is designed to help reduce rotational movement of the head in certain cases of angled impact.

Straight impact - oblique impact

The brain is typically more sensitive to rotational movement than linear movement because it has a shear strength similar to that of water or gel. When rotational movement causes different parts of the brain to move at different times, the tissues can be stretched, causing concussions or other brain injuries.

Rotational motion is a common cause of concussion and more serious brain injury from an oblique impact to the head. The MIPS system consists of a low-friction shell that is fixed inside the helmet. The low-friction shell is designed to slide slightly inside the helmet in the event of an accident, allowing forces to be directed away from the head. It is said to help reduce the risk of brain injuries.

Most conventional helmets are designed for a straight impact, but in most cases the impact is at an angle. The low-friction shell can reduce the rotational forces of an oblique impact.

Security system with the brain as a model

Unlike conventional helmets, which are primarily designed and tested for a straight impact, the low-friction shell of the MIPS system mimics the brain's own protection system against rotational movement. The cerebrospinal fluid is our natural protective system that allows the brain to move offset to the skull.