Have another way to protect your lens the cheap way.
I got a fatherly friend who, when he goes out shooting, will bring a few BABY DIAPERS. aka PAMPERS along and wrap the lens up wif this and place inside the lens bag: This is very useful in 3 WAYS:
1 ) Baby diapers are THICK, it absorbs impacts very well, and adds as added protection when used wif lens bags.
2) Baby diapers are dessicants also: They have silica gel-like materials inside and helps absorb moisture: See it as portable dry cabinets wif protection.
3) Baby diapers are CHEAP: They cost from 15cents to 50cents, depending on whether they are (L type or 3rd party..figuratively speaking)
Kalau ekonomi merosot dan harus berhemat, pake pampers aja! hebat!
If qian bu gou yong, just use the PAMPERS to wrap the lens and throw it in your bag!