L, 90cm length, suitable for use in 400mm f/2.8、 500mm f/4、600mm f/4、800mm f/5.6 Lens use.
M, 70cm length,fit for 200-400mmf/4、300mmf/2.8、Sigma150-600mm Sports、Sigma 60-600mm Sports、
S, 60cm length, for 300mm f/2.8、400mm f/4、200mm f/2, Sony FE 200-600mm F5.6-6.3 G OSS
XS, 60cm length, suitable
XXS, length is 50cm, fit for 70-200mm, 300mm F/4 lens such