Organic Cotton T-Shirts

Designed to be the best t-shirts you own, made from naturally breathable Organic Cotton. No see-through fabrics, no itchy scratchy labels, just all-day comfort and long-lasting quality.

Front view of women's white organic cotton t-shirt in size 2XL on plus-size model, showing body hugging fit and full coverage
Why make the switch?
Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 1.

Naturally Breathable

Unlike synthetic fabrics which trap heat and moisture our Organic Cotton essentials let your skin breathe — minimising irritation and keeping you comfortable all day long.

Why make the switch?
Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 2.

Certified Organic

The athleisure vibes you adore, created with more natural materials. All our Organic Cotton clothing is either GOTS or OCS certified so you don't have to take our word for it.

Why make the switch?
Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 3.

Long-Lasting Comfort

Made from high-quality fabrics and designed to last wear after wear, our premium Organic Cotton styles get softer with every wash.

Why make the switch?
Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 4.

Gentle On Your Skin

Naturally soft and gentle on your skin, our Organic Cotton styles are perfect for everyday wear. We've ditched the itchy labels, tight seams and sweaty synthetics, favouring nothing but pure, all-day comfort.

Why make the switch?
Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 1.

Naturally Breathable

Unlike synthetic fabrics which trap heat and moisture our Organic Cotton essentials let your skin breathe — minimising irritation and keeping you comfortable all day long.

Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 2.

Certified Organic

The athleisure vibes you adore, created with more natural materials. All our Organic Cotton clothing is either GOTS or OCS certified so you don't have to take our word for it.

Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 3.

Long-Lasting Comfort

Made from high-quality fabrics and designed to last wear after wear, our premium Organic Cotton styles get softer with every wash.

Rating of 1 means .
Rating of 4 means .
The rating of this product for "" is 4.

Gentle On Your Skin

Naturally soft and gentle on your skin, our Organic Cotton styles are perfect for everyday wear. We've ditched the itchy labels, tight seams and sweaty synthetics, favouring nothing but pure, all-day comfort.

Our customers say it best
I’ve been on a search for good quality basic tops for a while and since finding Not Basics I’ve been steadily replacing my wardrobe with everything they sell. I’m obsessed.
— Emily
Best natural fibre clothing for UK girlies!
— Serena
Gorgeous basics and fabulous quality. I love my Not Basics leggings and the quality is absolutely amazing. It's hard to find this quality cotton leggings anywhere else.
— Beata
Not Basics does basics so well! The quality is phenomenal, and feels like such a well-made piece. I have 4 bodysuits and 5 shirts and they are my favourite pieces and go-to's on a daily basis. I love the colours they's come out with and can't wait to see what's next!
— Lindsay
As an eczema sufferer, I now live in their 100% cotton sweaters and I love them and get lots of compliments on them - including from the teenagers I teach which is saying something!
— Georgina