Easy to mount, requires no tools New patented FLIP-TIP attachment system Fits every standard rail saddle, also with carbon rails Suitable for tire widths between 30-50 mm Great for gravel Designed especially for wide tires, the Ass Savers Big is here to protect you from mud and dirt all day long. Use it with your MTB, gravel bike or your daily commuter, it doesn't care!The new FLIP-TIP lock mechanism will ensure that your Ass Saver Big will stay put no matter how rough roads you ride. Totally redesigned, it's stronger, longer and more colourful than ever before. Technical data Measures: 383x115.5 mm Weight: 25.5 g Material: 0.8 mm PP (Polypropylene) Front rail attachment Since 2014 all Ass Savers attach to the front saddle rails only, ahead of the seat post attachment. The advantage with this solution is that saddles are more uniform in this area and we can therefore provide a proper fit to a much wider range of saddles. Attaching only to the front rails makes the Ass Saver self centering. If you accidentally kick it without noticing, it will strive to regain it's centered position.FLIP-TIPUsing origami principles, the patent pending FLIP-TIP technology allows you to securely fasten the Ass Saver to the saddle with a simple flip of the tip, just like a cycling cap. To unlock, just flip the tip back down and pull backwards. Carbon rails The FLIP-TIP technology is fully compatible with all types of carbon saddle rails.Saddle bag compability The new Ass Saver is a lot easier to install with a saddle bag than previous models. While we can't guarantee a perfect fit with all saddle bags, great improvements have been made with considerably less interference as a result.Pre-folding The secret to transforming a flat piece of plastic into a functioningg product lies in the pre-folding prior to use. All the scoring lines have been carefully engineered to achieve locking mechanisms, self centering abilities, spring loading and material endurance.