Sewing terms change internationally, which is confusing, slopers and blocks are one of those terms:
In Australia when we refer to a pattern block, we are referring to the basic shapes that sewing patterns start from. There is a skirt block, bodice block, pants block, torso block and sleeve block. The USA refers to these as slopers.
A block can be fit to a standard size or custom to fit you perfectly. You then use this as the basis to draft your own designs and variations.
Book into our pattern drafting program and you will not only custom fit your own block, but learn to draft your own design variations. Read more here.