HIIT Starter Kit
Everything you need to get through your first HIIT class — and still be walking the next day.
The thinking
Why these items
HIIT demands more from your kit than most activities. Leggings need to stay put through burpees, bras need to hold through box jumps, and everything needs to handle serious sweat.
The Kit
Complete Outfit
essential · Under Armour
Infinity High Sports Bra
£54.99
For D+ cup. The encapsulation design handles jumping jacks and box jumps without compression-only alternatives.
essential · Nike
Swoosh Medium-Support Sports Bra
£32
For A–C cup. Enough support for HIIT without the bulk of a full encapsulation bra.
optional · Gymshark
Speed Shorts
£33
Alternative to leggings for hot studios. 3-inch inseam, liner brief included.
Brand shortlist
Trusted brands for HIIT
Before you start
Beginner Tips
Buy darker colours for your first HIIT sessions — sweat patches are real. Compression leggings outperform loose shorts until you know your range of motion in each exercise.
Links marked “Shop at” may be affiliate links — Forre earns a small commission if you buy, at no extra cost to you. Our kit recommendations are based on community fit data, not commission rates.