Re: A classy high end guitar strap?
One of the very top-of-the-line leather strap companies is Moody's, but they tend to be very expensive...as much as $175. They are very special, made from beautiful, soft leathers.
Levy's Leathers has many beautiful leather straps. I especially like their carving leather straps, and I have several of them in the smooth leather. I have the paisley, oak leaf, basket weave, checkerboard, kokopelli, and the geometric lines patterns....and multiples of some. Very classy and elegant. Another favorite is their new Super Soft straps...plain leather, but beautiful colors and soft as a baby's _ _ _ _. I also have several of their Classic Series garment leather padded straps.
Guitar Center carries Franklin Straps. These modestly priced leather straps are an excellent value; moderate cost and excellent quality. Of my 55 guitars, probably 12 or more have Franklin straps. Limited colors.
Italia sells their straps on e-bay. I have one of their straps and it is very nice. They tend to run a little short for me, with my very rotund profile. If he is very tall or very round, he might need an extra-long strap. Most companies will do this as a special order.
And consider a custom strap made by a local artisan. There may be someone in your area that can cut, dye and carve something really special. Another of my favorite straps are those of the various makers. My 1975 D-28 has its original Martin-brand strap...soft and worn.... I also have a couple of very nice Taylor Straps for my Taylors, and a rare Music Man strap...part of the original case candy that came with my new 1978 Sabre II back in the day. Really heavy yet soft leather in a rich dark brown...yum.
I think what you are doing for your teacher is a really, really nice thing. But I also know that straps CAN be a very individual and personal thing. Some of mine were gifts from ex-girlfriends, now fondly remembered. A couple were bought on trips, and never fail to evoke memories of those good times. Such is the power of a leather strap. He'll always remember where it came from and its significance.
Good luck!
Bill