The Mizuno GX Sonic Royal PW is back in every size after selling out since January. Here is how to get the fastest tech suit ever made for around £165 all in, using my Buyee sign-up link for 10% off.

Which tech suits actually work for breaststroke kicks. Why some sprint suits fight a wide kick, and my picks for 50, 100 and 200 breaststroke.

How tight a tech suit should feel, how brand sizing differs between Mizuno, Arena, Speedo and TYR, and how to pick your size with confidence.