PROtect SPK is an innovative system developed by PROtect tapes with the support of professional sailors to allow for the 'wooling' of gennakers and spinnakers while respecting the environment.
 
The SPK buttons can be glued, sewn or screwed onto the luff tape of the sails with no special skills required. To use, the yarn is wound around the button, around the bunched sail, and back onto the button. When the sail is set and the threads are broken and the V-shaped groove of the button retains the thread until the sail is dropped. The broken threads are retained at the throat of each button, without falling into the sea, whether of wool or biodegradable material like our yarn ball SPK003 (not included in the kit). The crew will then remove them when the sail is lowered or at the end of the race. SPK allows therefore to get back to the method used in the past, now much cheaper and environmentally friendly to respect our planet.