Most Simply Sage tees are described as lightweight (no specific ounce listed). There is at least one heavyweight graphic tee explicitly listed at 7.5 oz/yard.
Most Simply Sage tees use a crew neckline and are short-sleeve pullover shirts.
Lengths vary: many short-sleeve tees are listed as “At Waist,” while at least one listing is described as “Below Waist.”
Materials vary across the range. Many items are 100% cotton. Some colorways use a 52% cotton / 48% polyester blend. Oatmeal options list 50% cotton / 25% polyester / 25% rayon; H. Grey is listed as 90% cotton / 10% polyester. One listing also notes 100% ring-spun cotton.
Tees are offered in regular fits and in more relaxed or boxy silhouettes; some items are described specifically as relaxed or boxier.
Care instructions vary but commonly recommend machine wash (cold) and air drying: many listings specify machine wash and line dry or lay flat to dry. Some allow machine wash and tumble dry low. One listing specifies hand wash and then line dry or lay flat. Several product descriptions also advise turning garments inside out and washing cold; some recommend air-drying but note tumble dry low is allowed.
Many listings note single-layered construction. Garment-dyed items mention bound self-fabric neck and armholes.