A side-opening box with a brand-specific 100-card double-sleeve rating
Choose the Sidewinder for its low side-access layout and magnetic closure. Its current manufacturer page documents the exterior footprint and sleeve-qualified capacity. Do not interpret the 100+ name as proof of spare room with every thick inner sleeve.
Choose it if
You prefer side access and a magnetic cover.
Look elsewhere if
Your exact sleeve stack needs more space than this documented configuration establishes.
The buying facts
| Capacity | 100 double-sleeved or 120 single-sleeved cards in Ultimate Guard sleeves |
|---|---|
| Exterior | 104 × 88 × 78 mm |
| Model | UGD011210 |
| Closure | Magnetic |
Will it fit?
Manufacturer-statedUltimate Guard bases its 100 double-sleeved and 120 single-sleeved ratings on its own sleeves. Other brands can affect capacity. The current manufacturer page documents exterior dimensions, not internal clearance; no exact cross-brand stack fit is established here.
Which measurement matters?
The published exterior describes the space the closed box takes in a bag. It does not describe the available card compartment. This review omits an earlier internal measurement that could not be confirmed on the current manufacturer page; seek a documented internal measurement or check the complete sleeved stack if clearance is tight.
A deck-only choice
The model is focused on the cards rather than a separate dice drawer. For a regular 100-card deck, count tokens and spare sleeves as extra requirements. If you want one container for a full table kit, a drawer-equipped alternative may fit the workflow better.
Sidewinder or Boulder?
Both have manufacturer capacities tied to Ultimate Guard sleeves. Choose between their access and closure designs before assuming one has more practical capacity. The Boulder’s compact snap-style construction and this model’s magnetic side opening create different handling choices without proving durability rankings.
What to compare it with
Ultimate Guard Boulder 100+ — Frosted
A compact box with a different closure and footprint.
Gamegenic Sidekick 100+ XL Convertible
Compare explicit thick-inner positioning and the different sleeve caveat.
Sources & verification
- Ultimate Guard Sidewinder 100+ Xenoskin Black — manufacturer specifications — Manufacturer documentation. Verified 2026-09-26.