If you live by the rule of "work hard, play hard", the red and black Ultimate Guard Boulder 100+ SYNERGY is for you. Have fun! Eat, drink and be merry, but we strongly advise you, to use the Boulder with the utmost caution: it might trigger your demons and bring out the worst in you.

- Designed for 100 double-sleeved or 120 single-sleeved standard sized cards in Ultimate Guard Sleeves
- Durable and rigid box
- Soft-touch finish
- Designed to fit into other Ultimate Guard products: Superhive 550+, Arkhive 400+, Flip'n'Tray 100+, Twin Flip'n'Tray 200+
- Secure closure