K4 Fins Bubble Size:17cm Armstrong introduced a major innovation

Armstrong introduced a major innovation to the wing board space in 2021 with the Forward Geometry concept

It incorporates the rope stash pocket for easy storage of your downhaul rope

this silicone application prevents further water from flushing into the suit

27mm diameter arms

K4 Fins Bubble Size:17cm Armstrong introduced a major innovationOur Freestyle fin developed with Andy Bubble Chambers. We originally had two different prototypes; one worked great on flat water but would let go in the chop, the other was rock solid in the chop but too grippy on flat water. The BUBBLE freestyle fin has the perfect blend of grip to be secure in the chop and into carving manoeuvres, whilst still allowing plenty of release for double spins. A fin you can take anywhere which wont let you down. Grip in