The new SLS Slide and Lock System small is Mares' latest generation ballast system. SLS system offers a visual aid to verify the correct attachment of the jacket pocket system. Avoids unwanted release of the weight pockets.

The new SLS Slide and Lock System small is the latest generation ballast system from Mares. The system uses a mechanical interference based system that during insertion pushes the holding prongs into position and prevents them from retracting. During release, it does not only eliminate the interference, but also pulls the prongs inwards via a system of sliding surfaces, ensuring that the male and female buckles can be removed.

Ease of use is ensured by a large handle and a tunnel on the jacket which controls the insertion of the ballast pocket so that the male buckle is aligned with the female. A finger is then used to push the slider in, which is followed by a loud "click" but also by the appearance of a green closed padlock in a special window that replaces a red open padlock.

The small pocket has a capacity of 4kg and a heavy duty zip.

The main features of the SLS ballast system are:

• Robust zipped pocket
• Easy to slide into the pocket
• Visual aid to check that the system is attached correctly
• Avoids unwanted release of weight pockets
• Easy to use with thick gloves