Ultimate Guard Boulder Deck Case 100+ Solid Black

Built Like a Boulder, Trusted Like a Vault

The Ultimate Guard Boulder 100+ in Solid Black is the kind of deck box that earns its place in your bag and stays there. Machined from a rigid, impact-resistant polypropylene shell, the Boulder is designed to take the knocks of tournament bags, backpacks, and game night chaos without passing a scratch on to the cards inside. The all-black finish is clean, understated, and lets your deck do the talking.

Capacity & Sleeve Compatibility

The Boulder 100+ holds up to 100 double-sleeved cards — making it a genuine Commander-ready box straight out of the package. Whether you're running a full 100-card Commander deck in perfect-fit inners and standard outers, or a 60-card competitive deck padded out with tokens and sideboard, this box accommodates without forcing you to choose between protection and capacity. Double-sleeve compatibility is a first-class feature here, not an afterthought.

Build Quality & Closure

The Boulder earns its name from its rigid hard-shell construction — there's no flex, no give, and no creaking under pressure. The secure snap closure keeps the lid firmly shut during transport, so cards aren't sliding around or popping free at the bottom of a bag. The design includes a smooth thumb notch for clean, one-handed access, and the lid holds its position when open so you're not fighting the box during deck checks or game play.

Who It's For

This is the box for players who want a no-nonsense, bombproof home for their deck at a price that doesn't sting. Ultimate Guard has built a reputation on functional, durable gear for serious hobbyists, and the Boulder is that philosophy distilled to its essentials. It's equally at home at a Friday Night Magic table, a Commander night, or tucked into a collection display. The Solid Black colorway is a classic — it works with everything and never dates.

Specifications