* Futures 3.75 quad trailer fins * Futures fin system * Size: Small * Futures truss base * Thermotech construction * Neutral template * Colour: White The new Futures QD2 3.75 Thermotech Quad Rear Surfboard Fins is a small-sized quad set that can be used with Futures front fin sets depending on your board design or riding preference. This rear fin set has a Thermotech construction with a consistent flex for that solid drive and release. This quad rear fins come with the Futures truss base and a neutral template that is much more durable and lightweight than most fins to give you that all-around performance.