★ Purchases without comments are welcome. I apologize, but I will prioritize those who purchase, even if you have commented. Thank you for your understanding. Thank you for viewing. These are FCS fins. FCS MF Thruster, Neo Carbon material, LARGE size, suitable for 78kg-90kg. - Brand: FCS - Model: MF - Type: Thruster - Material: Neo Carbon - Size: LARGE - Weight Range: 78kg - 90kg / 165 - 200 pounds I am sorry, but I do not have enough knowledge to answer detailed questions. Please understand. Please understand that I cannot answer. Please make your judgment based on the images. * I took them out of the case for the photos. * No claims and no returns are accepted. * I have a cat. I take precautions, but there may be some cat hair. If you are concerned, please refrain from purchasing.