Thinvelope is very similar to a standard envelope in its design. The case is just wide enough to hold the iPad 2, although it has enough depth to support Apple’s Smart Cover. As with many envelopes, a triangular flap holds the sleeve shut. In the past, Beyzacases has used embedded magnets to fasten its leather products, and they’d often show through the material, detracting from the overall quality of the product. With Thinvelope, the…