We present near-Infrared images of low surface brightness galaxies : H band images of UGC 6614 and F568-6 ( Malin 2 ) .
The H band images show spiral structure so we are confident that we are seeing the galaxy disks as well as the central bulges .
The optical-IR colors of these galaxies , R - H = 2.2 \pm 0.2 , B - H = 3.5 - 4.2 , are extremely red and are similar to those of many S0 and elliptical galaxies .
This represents strong evidence for a component of old stars .
Recent studies find that low surface brightness galaxies span a wide range of morphologies and colors .
In this context UGC 6614 and F568-6 could be examples of low surface brightness galaxies which have undergone a past epoch of more vigorous star formation .