NS 7,5 cm. I love the perfect symetry of this clone and the wide petals. The color is not the deepest though
Phragmipedium besseae ‘Big Bob’ x ‘Colossal’ web by Erythrone, sur Flickr

Very nice. A fitting mate for 'Carlisle'.
Yay besseae!! Are you sure the cross is correct?
Where/how did you get it? The bunch I brought to Canada a couple of years ago, I wouldn't bet on their pedigree!