Ultimate Guard Boulder Solid 100+ Deck Case – Petrol – Holds 100 Double-Sleeved TCG Cards

The Ultimate Guard Boulder Solid 100+ in Petrol is a deck case built to hold 100 double-sleeved or 120 single-sleeved standard-size trading card game cards. Its opaque, scratch-resistant plastic shell provides a secure, no-transparency storage solution for players who want to keep their deck hidden and protected during travel or at events.

How many cards does the Boulder Solid 100+ hold?

This deck case is designed for 100 double-sleeved cards when using Ultimate Guard sleeves. If you prefer single-sleeved cards, it fits up to 120 standard-size cards. The interior is precisely molded to keep cards snug without excess movement, reducing the risk of bending or shifting during transport.

What makes the closure secure?

The lid snaps shut with a firm, positive click. The tolerances are tight enough that the case won't pop open accidentally, but easy enough to open when you need access. There's no latch or strap—just a well-engineered friction-fit lid that stays closed even when the case is dropped or tossed in a bag.

Will this deck case fit inside an Ultimate Guard Arkhive?

Yes. The Boulder Solid is designed to slide neatly into Ultimate Guard Arkhive 400+, Arkhive 800+, Superhive, and Omnihive storage units. This allows you to carry multiple decks in a single organized box. The outer dimensions are compact enough to fit standard storage without wasted space.

What are the exact specs?

Is the color really called Petrol?

Yes. Petrol is a deep blue-green shade, similar to the color of crude oil or dark teal. It's muted and professional-looking, not flashy. The finish is matte, which helps resist fingerprints and scratches.

Frequently asked questions

Does the Boulder Solid 100+ come in other colors?

Ultimate Guard offers this model in many colors, but this specific listing is for the Petrol variant only.

Can I use non-Ultimate Guard sleeves?

While the capacity is tested with Ultimate Guard sleeves, many players report that other standard-size sleeves also fit. However, if you use very thick sleeves, the count may be slightly lower. The case is designed to hold 100 double-sleeved cards in Ultimate Guard sleeves specifically.

Is the case padded inside?

No. The interior is smooth rigid plastic. The protection comes from the tight fit and sturdy shell, not from foam or cushioning.

Designed and engineered in Germany, the Boulder Solid reflects Ultimate Guard's commitment to durable, functional deck storage. It's a straightforward no-frills case that does exactly what it promises: keep your cards safe and hidden.