Adult Bag w/Med Adult Mask and Bag Resevoir. Ambu SPUR II features a unique shape that is small and easy to hold, yet provides optimum stroke volumes with just one hand. The bag itself is thin and responsive and the SafeGrip surface ensures that the Ambu SPUR II can be firmly squeezed. All Ambu SPUR II resuscitators come in individual, re-sealable plastic carrying bags, complete with one or more masks and many special accessories. The bags themselves are color-coded for fast identification of infant, pediatric, and adult sizes.