Grade 8 Panama! The 8-20 grading on a Panama Hat is an indication of the thickness of fibers and the complexity of the weave. It can take up to 20 hours for a skilled artisan to hand weave the exquisitely fine starnds of straw. Brim: 3" Trim: 12-Ligne Grosgrain, Covered Crown Tip, Vom Baur Sweat (Teflon Coated)