How to Add Thumbholes to Any Long Sleeve Shirt (5-Minute DIY)
Give your favorite long-sleeve shirt a sporty, cozy upgrade—no special tools or fancy skills required! Thumbholes are one of those clever little details that instantly elevate a basic long-sleeve tee into something sleek, comfy, and functional. Whether you’re heading to the gym, layering for chilly weather, or just want that extra touch of athleisure style, …


