Boulder-Built Protection for Your 100-Card Deck
The Ultimate Guard Boulder Deck Case 100+ in Kouyo Brown is built around one idea: your deck deserves better than a flimsy shell. The Boulder's signature rigid polypropylene construction gives it a tank-like solidity that serious players recognize immediately — this is a box that survives the bottom of a bag, a tournament weekend, and years of regular use without warping, cracking, or losing its shape. The warm, earthy Kouyo Brown colourway gives it a distinctive look that stands out from the sea of black cases at any game table.
Fits Your Full Sleeved Deck
The 100+ designation means this Boulder holds 100 double-sleeved cards — the real-world test for Commander players and anyone running inner sleeves for extra protection. Single-sleeved Standard or Modern decks will fit with even more breathing room. Whether you're running a full 100-card Commander build under KMC Hyper Mattes or a 60-card Pioneer deck in Dragon Shield double sleeves, this box is sized for the way serious players actually prepare their cards.
Signature Closure and Access
The Boulder uses Ultimate Guard's secure snap closure — a satisfying, positive-lock mechanism that won't pop open in transit but opens cleanly with one hand during play. The hinged lid is designed to stay open on its own at the table, so you're not wrestling with it between games. A generously sized thumb notch makes drawing your deck out quick and natural, even through bulkier double-sleeve setups. The interior is smooth and snag-free, protecting your sleeves from the friction damage that cheaper boxes can cause over time.
Who Reaches for the Boulder
The Boulder 100+ is the go-to daily carry for Commander players, cube owners, and anyone who double-sleeves their cards and needs a box that actually accommodates that commitment. Ultimate Guard has built a reputation on lifetime-quality construction — this is the kind of deck box that outlasts multiple decks and still looks sharp doing it. The Kouyo Brown finish makes it a strong gift choice too, particularly for players with a taste for understated, natural-toned accessories.
Specifications
| Specification | Detail |
|---|---|
| Brand | Ultimate Guard |
| Capacity | 100+ double-sleeved cards |
| Closure | Snap (hinged lid, stays open during play) |
| Material | Rigid polypropylene |
| Double-Sleeve Compatible | Yes |
| Colour | Kouyo Brown |
| Extras | None |
