The Arena Mast Jr FL (also known as the Arena Master Jr FL) is a popular, durable one-piece swimsuit designed for youth and junior competitive swimmers.

The abbreviation "FL" stands for the Light-Tech or Light Drop Back thin-strap design, which provides maximum range of motion and comfort for training and racing.

Key FeaturesMaxLife Eco Fabric: Made with 100% polyester (over 50% recycled), it is highly resistant to chlorine damage, fading, and stretching.

Designed for Laps: The thin straps and open back design eliminate distractions while minimizing drag.

Comfort & Fit: Fully front-lined (in most junior sizes) with UPF 50+ sun protection.