Women's Interval Singlet: Features and Fit Guide
By BOA | Running Shorts & Apparel | Made in the USA | Published: 2026-10-29
Category: Product Reviews
Learn how the BOA Women's Interval Singlet fits and what features make it a great choice for warm-weather running. Includes sizing tips and a step-by-step fit check.
Quick answer
The BOA Women's Interval Singlet is designed for warm-weather running with a racer back, scoop neckline, and drop hem for coverage. Follow these steps to check the fit and get the most out of this lightweight singlet.
Why fit matters for a racing singlet
A well-fitting singlet should move with you without riding up or chafing. The Interval Singlet's offset side seam and racer back are designed to reduce irritation, but the right size is key to making those features work.
Understanding the drop hem and neckline
The 2 ½” drop back hem provides extra coverage when you lean forward, and the feminine scoop neckline increases ventilation. These design elements are intentional for performance, but they mean the fit may feel different from a standard tank top.
How to check the fit of your Interval Singlet
- Check shoulder and armhole fit: Put on the singlet and raise your arms overhead. The armholes should not gap or pinch. The racer back should lie flat against your shoulder blades without digging in. Common mistake: Choosing a size that is too loose can cause the armholes to gape and chafe.
- Assess the torso length and drop hem: Stand naturally and then bend forward slightly. The 2 ½” drop back hem should cover your lower back without riding up. The front hem should sit at or just below your waistband. If the hem rides up when you lean forward, try a size down for a closer fit.
- Evaluate the neckline and ventilation: The scoop neckline should sit comfortably below your collarbone without exposing too much skin. It should allow airflow without feeling loose or floppy. Common mistake: A too-large size can make the neckline sag, reducing ventilation and causing fabric to flap.
- Move through a running motion: Jog in place or swing your arms as if running. The singlet should stay in place without twisting or riding up. The offset side seam should not be noticeable against your skin. If the singlet twists or shifts, consider a size smaller or check that the seam is aligned with your side.
- Check for chafe points after a short wear test: Wear the singlet for 10-15 minutes of light activity. Pay attention to any rubbing under the arms or along the side seam. The offset seam is designed to eliminate chafing, but a poor fit can still cause irritation. Takeaway: If you feel any rubbing, the singlet may be too loose or too tight. Adjust size accordingly.
Product features at a glance
- Women's Interval Singlet - Ohio: The BOA Interval Singlet includes a racer back, offset side seam, 2 ½” drop back hem, and a feminine scoop neckline. The racer back and offset seam reduce chafing, while the drop hem and scoop neckline improve coverage and airflow during runs.

Women's Interval Singlet - Ohio
