Small size: Outer size: 26*13*20cm; Inner size: 25*11*16cm; Can put 1 DSLR + 1-2 Lens
Fits for Nikon D3100, D3200, D3300, D3400, D5100, D5200, D5300, D5500, D5600, etc
---------------------------------------------------------------------------------------------------------
Medium size: Outer size: 35*17*23cm; Inner size: 32*12*17cm; Can put 1 DSLR + 1-2 Lens + 12'' Ipad
Fits for Nikon D80, D90, D7000, D7100, D7200, D7500, D500, D600, D610, D750, D800, D810, etc
-----------------------------------------------------------------------------------------------------------
Large size: Outer size: 41*16*29cm; Inner size: 37*12*20cm; Can put 1 DSLR + 2-3 Lens + 14'' Laptop
Fits for Nikon D80, D90, D7000, D7100, D7200, D7500, D500, D600, D610, D750, D800, D810, etc