Sidekick Pro 100+ XL vs Watchtower 100+ XL: Which to Pick
By Gamegenic: Home | Published: 2026-10-31
Category: Comparisons
Compare the Sidekick Pro 100+ XL and Watchtower 100+ XL on capacity, sleeves, and extras. Find out which 100+ XL convertible deck box fits your Commander deck.
Quick answer
Choose the Sidekick Pro 100+ XL if you want a removable Slide Card Case and licensed artwork; choose the Watchtower 100+ XL if you need extra room for thicker inner sleeves or more tokens.
Capacity and sleeve fit: where the two boxes diverge
Both boxes hold 100+ double-sleeved cards in a sideloading position, but the Watchtower 100+ XL is specifically built to fit 100 double-sleeved cards in particularly thick inner sleeves. That extra internal clearance means it can also store 100 regular double-sleeved cards with room left over for tokens. The Sidekick Pro 100+ XL also holds 100+ double-sleeved cards and includes additional space for tokens, but it does not advertise the same thick-inner-sleeve accommodation. If you use thin or standard inner sleeves, either box works; if you use thick inner sleeves, the Watchtower is the safer bet.
The removable Slide Card Case: a practical extra
The Sidekick Pro 100+ XL includes a UV-protected Slide Card Case integrated into the front of the box. It can be removed and used during gameplay, giving you a dedicated place to hold a card or token without digging into the main compartment. The Watchtower 100+ XL does not list a removable card case; its focus is on convertible storage and sleeve fit. If you like keeping a commander or key card separate and protected, the Sidekick Pro’s case is a genuine convenience. If you prefer a simpler box with maximum internal space, the Watchtower’s lack of an extra case may be an advantage.
Artwork and licensing: style versus plain utility
The Sidekick Pro 100+ XL features officially licensed artwork in two designs from the game, so it doubles as a display piece. The Watchtower 100+ XL is offered in multiple colors but does not carry licensed artwork. Neither choice affects protection, but it matters if you want your deck box to match a specific deck theme or if you prefer a neutral look that won’t clash with future decks.
Trade-offs at a glance
- Sleeve thickness: If you use thick inner sleeves, pick the Watchtower 100+ XL. If you use standard or thin inner sleeves, either box fits, so decide on other features.
- Removable card case: The Sidekick Pro 100+ XL includes a removable Slide Card Case for use during play. The Watchtower 100+ XL does not. Choose the Sidekick Pro if you want that extra accessory; choose the Watchtower if you prefer fewer parts.
- Artwork versus plain color: The Sidekick Pro 100+ XL has officially licensed artwork in two designs. The Watchtower 100+ XL comes in multiple colors without licensed art. Pick based on whether you want a themed look or a neutral one.
Product facts
- Magic: The GatheringSIDEKICK PRO100+ XL CONVERTIBLE: Holds 100+ double-sleeved cards in a sideloading position with additional space for tokens and a UV-protected Slide Card Case at the front. You get a removable card case for gameplay and enough room for a token pile without a separate container.
<span class="mtg_headline">Magic: The Gathering</span><br>SIDEKICK PRO<br><span class="mtg_headline mtg_subline">100+ XL CONVERTIBLE</span> - WATCHTOWER100+ XL CONVERTIBLE: Made to fit 100 double-sleeved cards in particularly thick Inner Sleeves, or 100 regular double-sleeved cards with extra space for additional tokens. If you use thick inner sleeves, this box avoids a tight squeeze and still leaves room for tokens.
WATCHTOWER</br><span class="gg_product_subline">100+ XL CONVERTIBLE</span>
Which should you choose?
Best for
- Players who use thick inner sleeves and need extra token space (Watchtower 100+ XL)
- Players who want a removable, UV-protected card case for gameplay (Sidekick Pro 100+ XL)
- Players who prefer licensed artwork that matches their deck (Sidekick Pro 100+ XL)
Not for
- Players who want a removable card case and choose the Watchtower 100+ XL
- Players who need maximum sleeve clearance and choose the Sidekick Pro 100+ XL
- Players who want a plain, neutral-colored box and choose the Sidekick Pro 100+ XL
