Built Like Its Name Suggests
The Ultimate Guard Boulder Deck Case 100+ is a deck box that takes protection seriously. Machined from Ultimate Guard's signature Superhive polypropylene, the Boulder has a distinctively ribbed exterior that isn't just aesthetic — it adds structural rigidity and grip, making it one of the most durable rigid deck boxes in the hobby. If you've been carrying your decks in flimsy plastic shells that crack at the hinges or pop open in your bag, the Boulder is a meaningful upgrade.
Capacity & Sleeve Compatibility
The 100+ designation means this box comfortably holds a full 100-card Commander deck in standard inner sleeves, or approximately 80 cards in double sleeves. It's sized for standard 63 × 88 mm card formats — Magic: The Gathering, Pokémon, Lorcana, Flesh and Blood, and similar games all fit without issue. The interior is generously dimensioned so your sleeved cards slide in and out cleanly rather than jamming against tight walls.
Closure & Build Quality
The Boulder closes with a positive-click snap lid — no magnets, no loose flap. The lid hinges open and stays open during deckbuilding and play, which is a small but genuinely appreciated detail when you're pulling cards mid-game. A thumb notch on the front of the box makes one-handed access quick and natural. The Superhive polypropylene construction means this box resists cracking under pressure and holds its shape over years of regular use — Ultimate Guard backs their products accordingly.
Who This Box Is For
The Boulder 100+ is a straightforward choice for Commander players who want a reliable, no-nonsense home for their flagship deck. It's also a smart pick for anyone running a 60-card deck in double sleeves who needs the extra breathing room. The clean design and premium material make it a gift that any card player — from a casual kitchen-table regular to a Friday Night Magic regular — will actually use and appreciate. This is Ultimate Guard's entry point into serious deck protection, and it earns that reputation every time you snap the lid shut.
Specifications
| Specification | Detail |
|---|---|
| Brand | Ultimate Guard |
| Capacity | 100+ single-sleeved standard cards |
| Closure | Snap lid |
| Material | Superhive polypropylene |
| Double-Sleeve Compatible | Yes (approx. 80 double-sleeved) |
| Card Size | Standard (63 × 88 mm) |
| Extras | None |
