The Margot Linen Bralette is adjustable with an organic cotton strap. It can wrap around several times around the waist. It's a great statement piece for the summer , the beach and to lounge in. 
The natural dye technique used in the images is called bundle dyeing which consists of laying pigments and flowers onto the fabric and them steaming it for several hours.  
When ordering one, you can choose between several colours: Bundle dye (which will be different depending on what flowers and plants are in stock and in seasons) , blue, grey, white, pink, yellow and ocre. 
It is an eco frienldy clothing item as it was made with durable materials, zero waste and natural pigments.