Founded in 2012, Gymshark is one of the biggest fitness brands in the world. They have an international following and are known for their bestselling flex leggings. They are also known for their influencer marketing campaigns that have pushed their brand forward.

These bestselling seamless leggings are made of polyester and elastane, so they offer great support and stretchiness. They are breathable and moisture-wicking, so they keep you dry and comfortable during your workout. They also have a high waist waistband that keeps your tummy tucked in and prevents them from sliding down during your workout.