Interval Muscle Tee

The Interval Shirt is the gold standard for training shirts. It’s built to move fast, breathe easy, and handle every workout without compromise.

Constructed from lightweight, sweat-wicking fabric with high-stretch mobility, the Interval Shirt is equally at home in max-effort conditioning, tough strength days, and miles on the road. Bonded seams and a streamlined fit ensure comfort that never distracts. This is the shirt built to push the limits.

Once an order for this product has been placed, it will typically will be fulfilled and ready to ship within 2-3 business days. Returns of return-eligible items are accepted within 30 days from the date of purchase if purchased from a The Shop at Equinox location, or from the date an online order is delivered. Note, certain items are final sale based on pricing or product type. Please refer to product description for any final sale notes or limits to return eligibility.