Collection: Manches longues —

Versatile layers for all-season comfort

Women’s long sleeve t‑shirts you’ll reach for again and again

When you're searching for the right long sleeve T-shirt for women, it’s not just about having an extra layer. It’s about finding something that fits well, feels good on the skin, and works across seasons. At Organic Basics, our selection of women’s long sleeve cotton T-shirts is made from soft cotton, including organic cotton, and other thoughtfully sourced materials. Sometimes organic, sometimes not — always chosen for quality and comfort.

Designed for layering, built to last

A good long sleeve should feel just as relevant on its own as it does layered under your go-to knitwear. That’s why our T-shirts with long sleeves are cut to flatter and made with just the right cotton fabric weight, it’s not too light, not too heavy. Pair one with a soft women’s cardigan for a transitional look, or wear it beneath one of our relaxed women’s sweaters when the weather turns cold. The structure, stretch and softness of the cotton are designed to hold up wear after wear.

Long sleeves in organic cotton for women that suit any style

Whether you lean toward fitted silhouettes or prefer something more relaxed, this collection includes long sleeves that adapt to your day. Choose from a variety of styles such as mock necks, classic crews, and scooped necks. All in sizes and tones that layer easily with your favorites. And if you're into tonal dressing or building a capsule wardrobe, they work effortlessly under a cozy women’s sweatshirt too.

Fabric choices you can feel good in

We prioritize quality fabrics that are made to last. Many styles are made from organic cotton, others from cotton blends — always selected with intention. Every piece is soft, breathable and thoughtfully sourced to balance comfort, durability and fit. You can learn more about how we approach material selection across our collections directly on our site.