The Blackburn Air Stik SL mini pump is the perfect ultra-compact mini pump. Its 59 gram weight and small 6 inch (155mm) length make a great fit for a jersey pocket or saddle bag. The SL Pump has a unique two chamber design allowing for 37% more air per stroke when compared to other pumps at the same size. Designed with an anodized aluminum finish giving it a high-quality look. Max 160psi. White.