The Futures Fins SB1 Thermotech Side Bites Fin Set will add stability to your longboard, improving drive and hold on the face of the wave. Made in Huntington Beach, Thermotech fins do not have the traditional plastic feel of a composite fin. Instead, they have a consistent flex that creates drive and release through turns. Sold as a pair, these fins are built with 4º cant angle.
Fin Size Detail
Fin
Height
Base
Area
Foil
Sides
3.57"
3.91"
10.77"
Flat
Product Info
The Futures Fins SB1 Thermotech Side Bites Fin Set will add stability to your longboard, improving drive and hold on the face of the wave. Made in Huntington Beach, Thermotech fins do not have the traditional plastic feel of a composite fin. Instead, they have a consistent flex that creates drive and release through turns. Sold as a pair, these fins are built with 4º cant angle.
Fin Size Detail
Fin
Height
Base
Area
Foil
Sides
3.57"
3.91"
10.77"
Flat
Product Details
Fin Type: Futures Fins
Size: S
Fins in Set: Two
Fin Tech: Thermotech
MPN: 828530404
Product Construction
Thermotech Construction
Fins made from thermotech have a snappy and lightweight feel that retains the proper flex pattern for performance
Warranty
This product is backed by a warranty from the manufacturer. Click below for details on the warranty policy for Futures Fins products.
Futures Fins Limited Warranty
Futures Fins is proud to stand behind the highest quality performance products for your surfing and paddling experience. They offer a 1-year limited warranty against manufacturing defects. This does not include damage caused by normal wear and tear, misuse or inappropriate use or alterations to the product (sanded, painted, etc).
Products deemed a manufacturing defect will be repaired or replaced at the discretion of Futures Fins. Futures Fins will not be responsible for any costs, losses or damages incurred as a result of loss or use of product.
Proof of purchase is required for all warranty claims.
Faulty items will be exchanged for new items within 2 weeks of receiving the product.
Futures Fins will cover the cost of shipping your replacement product.
For additional questions and support, feel free to contact Cleanline Surf's Customer Service department for friendly assistance at 1-888-564-6176.
Returns
If you are not 100% satisfied with your purchase you may return it for a refund, or exchange within 30 days of receiving your order.
Cleanline Surf General Return Policy
Holiday Returns
For any orders placed after Nov 1st, 2025, we have extended our normal 30-day return policy to allow returns through January 31st, 2026.
Returns are easy! We understand that in some situations returns may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, within 30 days of receiving your order. Items must be in new condition with original tags and packaging.
Please refer to our full Return Policy for more details.
The side bites work well. The product was exceeded by the Aloha and customer service. Thanks for the stickers and the card. My daughter is heading to U of Portland in the fall. I shall certainly check you folks out for board and wetsuit rentals. Mahalo Nui
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