The sole also contains a removable panel

It is part bottle cage

will be able to take care of that for you

(see link below)

Note that this will not fit Race Face 30mm spindle BB's

Race Face Cinch Direct Mount Narrow-Wide Oval Chainring - Direct Mount - Race Face - Easton Cinch - 6-0mm Super Boost Flip - Oval - 30T - 9-12 Speed - Alloy Out of Stock The sole also contains aOptimize your pedal stroke by replacing your Race Face Cinch Chainring with an Cinch Direct Mount Narrow Wide Oval Chainring. Oval rings provide enhanced traction control compared to conventional round rings, particularly in high torque and low cadence scenarios. A variable width design helps with chain retention with clutch derailleurs and they are compatible with most chainguides. Note: Please view the link below for details on the Q Factors and