I've been using my PGB-03 for about one month now and...I LOVE IT!
It is the perfect size and hold everything I need in avery organized manner.
If I need to, I can fit:
Gi top and pants
Gi Belt
Cup and supporter
Compression shorts
Ankle and knee supports
Shin Guards
Head Gear
16 oz gloves
7 oz MMA training gloves
3 pair of hand wraps
3 Rash Guards
3 pair of shorts
Bar soap, face wash, body wash, Deodorant, face lotion
Flip Flops
Water
Protein Shaker bottle
Full size towel
Mouthguard with it's case
Bottle of asprine
Pocket for my Wallet, Blackberry cell phone, Keys and lip balm
I think that is all that I have in my bag at the most which is EVERYTHING I need for Muay Thai class, BJJ class, MMA class and my after training shower.
I highly recommend this bag to everyone that trains and never wants to buy another bag.