The Basic Ultra has, compared to other Swaens models, an extra absorbing capacity.
Due to an extra invisible layer of integrated bamboo.
The Basic Ultra has an absorption capacity of up to approximately 80ml.
Made from: 95% bamboo, 5% Spandex 
 This basic model is also available in the sizes XS, and for girls in sizes 152 and 164 (see Girl basic ultra)
Click here for the size chart.