Ultimate Guard Boulder Deck Case 100+ Coral

Boulder-Tough Protection in Coral

The Ultimate Guard Boulder Deck Case 100+ in Coral is built to take the punishment of regular play and come out looking sharp. Machined from a rigid polypropylene shell — now made with 78% renewable raw materials and manufactured in Germany — the Boulder series has earned its reputation as one of the most dependable hard-shell cases in the game. This isn't a flimsy clamshell that cracks in a tournament bag. It's the kind of box you buy once and carry for years.

Capacity & Sleeve Compatibility

The Boulder 100+ is rated to hold up to 100 double-sleeved cards in Ultimate Guard sleeves — that's a full Commander deck with room to spare, sleeved in both inner and outer sleeves without forcing the lid. Double-sleeve compatibility is confirmed, making this a premium choice for players who protect their cards at every layer. Single-sleeved decks fit with even more breathing room.

Build & Closure

The Boulder's signature feature is its positive-snap thumb-tab closure — a secure, satisfying click that keeps the lid shut during transport without requiring magnets or external straps. The lid opens fully and stays out of the way during deckbuilding or sideboard swaps. Access is clean thanks to a sculpted thumb notch that lets you lift cards out without fumbling. The rigid shell means the box holds its shape under stack pressure in a bag or backpack.

Sustainability & Craft

This edition of the Boulder is part of Ultimate Guard's RTE (Renewable Transition Edition) line, constructed from 78% renewable raw materials and printed in Germany. It's a meaningful step toward more responsible manufacturing without compromising the build quality the Boulder series is known for. The Coral colourway is a clean, warm accent that stands out in a pile of black and grey cases without veering into novelty.

Who This Box Is For

The Boulder 100+ is the go-to for Commander players who double-sleeve their builds and need reliable daily carry. It's equally at home in a competitive Standard or Modern player's bag — compact, durable, and stackable. Ultimate Guard's build philosophy is aimed squarely at serious players who want gear that performs session after session. The Coral colourway also makes this a genuinely distinctive gift for the player in your life who already has everything in black.