Here's a refined version:

This kids' heavy cotton tee is crafted for everyday adventures, offering comfort and durability that align with a life of purpose.
Made from 100% cotton for solid colors, with a polyester blend for heather variants, the fabric is perfect for printing and built to last. Twill-taped shoulders add durability, while the ribbed collar resists curling. With no side seams and a soft, midweight feel, this tee is a great choice for any season.

100% midweight (5.3 oz/yd²) US cotton for solid colors
Classic fit with a crew neckline for timeless style
Tear-away labels for comfort
Ethically made with Oeko-Tex certified, US-grown cotton
Heather colors: 50% cotton, 50% polyester; Sport Grey: 90% cotton, 10% polyester