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90 MINUTES. THOUSANDS OF MOVEMENTS. ONE BLISTER.

90 MINUTES. THOUSANDS OF MOVEMENTS. ONE BLISTER.

01

MOVEMENT

As the bones of the foot move during running and cutting, the skin at the surface can remain relatively constrained by the sock and boot.

02

GRIP

Friction between the skin, sock and footwear provides grip. But that grip can prevent the skin surface from moving fully in sync with the structures beneath it.

03

REPETITION

The same loading and movement happens thousands of times during football. Repeated shear deformation can eventually cause mechanical fatigue within layers of the skin.

04

THE BLISTER

When repeated shear causes a small separation within the epidermis, research describes the resulting space as subsequently filling with fluid — creating a friction blister.

THE KEY IDEA

A friction blister isn’t simply the skin being “rubbed off.” Current research describes it as an injury caused primarily by repetitive shear deformation within the skin.

WHY COOL AFTER THE WHISTLE?

WHY COOL AFTER THE WHISTLE?

Local cooling lowers skin and tissue temperature and can influence sensory nerve conduction and pain perception. Chillsides explores whether controlled, comfortable cooling immediately after football could improve how hot, tender feet feel during the post-match recovery period.

Local cooling lowers skin and tissue temperature and can influence sensory nerve conduction and pain perception. Chillsides explores whether controlled, comfortable cooling immediately after football could improve how hot, tender feet feel during the post-match recovery period.

WHAT WE DON’T CLAIM.

Chillsides is still in development. We do not currently claim that Chillsides heals blisters, prevents blisters, accelerates tissue healing or has a scientifically optimized cooling temperature. Those questions require testing. We believe good sports technology should show its evidence — not invent it.

RESEARCH BEHIND THE CONCEPT

FRICTION BLISTER MECHANICS

Friction Blisters of the Feet: A New Paradigm to Explain Causation

Rebecca Rushton & Douglas Richie — Journal of Athletic Training, 2024

FOOTBALL BOOT BIOMECHANICS

Harmful cleats of football boots: a biomechanical evaluation

J. A. Bentley, A. K. Ramanathan, G. P. Arnold, W. Wang & R. J. Abboud — Foot and Ankle Surgery, 2011

SOCCER BOOT + INSOLE BIOMECHANICS

Boot-insole effects on comfort and plantar loading at the heel and fifth metatarsal during running and turning in soccer

Michael P. I. Nunns, Sharon J. Dixon, James Clarke & Matt Carré — Journal of Sports Sciences, 2016

These sources inform the Chillsides concept. They are not Chillsides product test results.

CHILLSIDES

90 MINUTES ON. 15 MINUTES COOL.

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Chillsides is currently a product in development. Product appearance, specifications, materials and performance may change during development and testing.