Pennine sell waterproof, windproof and thermal fabrics in particular, ideal for walking and other outdoorsy things.
If you do want to visit the shop you can combine it with a visit to the nearby Ingleton falls for a nice day out.
In the photo of the shop, you should be able to see that 'Bentham Imaging' a photographic gallery is on the ground floor. To reach the shop go through the archway to the right and go up the stairs and through the door marked 'Pennine Outdoor'.
The owner is a lovely lady who let me take photos of some of the fabrics to share with you.