Iga Swiatek has begun using a Tidal Tank Hydrovest loaded with 10 litres of water during practice sessions on hard courts. The world No. 8 shared footage of the workout on Instagram ahead of the upcoming hard-court swing.
The Polish player confirmed the unusual method in a recent social media story. She wore the vest strapped to her shoulders while moving on court.
The Hydrovest creates unpredictable resistance as the liquid shifts, which aims to activate muscles and improve coordination. Swiatek has not used the technique before.
Her 2026 season has seen early exits and no titles so far. She reached the quarterfinals at the Australian Open and Indian Wells but lost in the first round at the Miami Open.
Swiatek dropped to No. 8 after a third-round defeat at Wimbledon. She has won multiple hard-court titles in the past, including the 2022 US Open.
