Great Headcover ... Bad Fastening

Received this headcover when I purchased the putter beautiful well made cover which goes great with the mallet BUT the magnetic closure is severely lacking the magnets just aren't strong enough to stay in place..1st round out I lost the headcover 2X and had to go back to the previous hole to find out where it fell off!!! NOT GOOD!!! either put stronger / better positioned magnets or dare I say ..Velcro !!