At the start of the Tour de France stage one team time trial in Barcelona, as riders left the makeshift warm-up area behind the start ramp, I watched as rider after rider was stopped by UCI officials and forced to remove any ice socks that they’d stuffed into their skinsuits.

On a day where temperatures soared past 30° C, riders were using every trick in the book to keep their core temperatures down before the start; ice vests, misting fans, alcohol sprays and even a strange cold water tub for the Netcompany Ineos riders’ arms were on show, as well as the oldest tactic of them all: ice socks.

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Many ice socks were abandoned at the start line over the course of the day. (Image credit: Future)

VILLARS-SUR-OLLON, SWITZERLAND - JUNE 21: Marcel Camprubi of Spain and Team Pinarello Q36.5 Pro Cycling refreshes with ice during the 89th Tour de Suisse 2026, Stage 5 a 150.7km stage from Villars-sur-Ollon to Villars-sur-Ollon 1249m / #UCIWT / on June 21, 2026 in Villars-sur-Ollon, Switzerland. (Photo by Tim de Waele/Getty Images)

Marcel Camprubi of Team Pinarello Q36.5 was among many riders seen using ice during stage 5 of the recent Tour de Suisse. (Image credit: Getty Images)