I had them on my motorcycle. You get what you pay for. The lids on mine lifted up after a while and would not seal very well. I would not buy them again.
On my wife's F3 we put on K40 Kappa bags with the K151 Wingrack 2 brackets. The Kappa bags are waterproof and will hold a full face helmet each. You can get both off eBay.
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