Purchased sun sleeves, I was concerned about buying correct size after being caught out before as being a cyclist I don't have massive upper arms. After reaching out to customer service to get more detail about sizing like circumference of upper and lower part was told, Ciara (MAAP Support) to order same size as jersey(large). Which I did purchase that size. My fears were confirmed are sleeve is too loose at top. I don't feel that I could downsize as I am struggling to get bottom part over wrist and a smaller size would exacerbate this situation. Very disappointing from what I consider a premium priced product. I am left with option of modifying top part to make product at least useable. At least more sizing information on the website would have prevent this from happening as I would have realised the product does not suit my body shape.