2025-26 Upper Deck Series 2 Hockey Mass Blaster Box: what's inside

What's in a 2025-26 Upper Deck Series 2 Hockey mass blaster box

Upper Deck has not published what this format carries on a page we could read.

• Series 2 holds the next 250 cards of the 2025-26 Upper Deck base set: 198 veterans, 49 Young Guns rookies and three checklists.
• Veterans run from card 251 to 450, with checklists at 449 and 450, and the Young Guns run from 451 to 500, with 500 a checklist.
• Clear Cut parallels of the base set are found only in hobby product; other base parallels include Exclusives numbered to 100, Outburst Red numbered to 25, High Gloss numbered to 10 and Outburst Gold one-of-ones.
• New insert sets for Series 2 include Boomtown, Glow-Up, IYKYK, Let Them Cook, Slaps and Vibing.

Details

4 packs of 12 cards, 48 cards in all, per Upper Deck's own page. Released March 18, 2026, as reported by checklistinsider.com.

• Hobby Box12 x 12
• Mass Blaster Box (this box)4 x 12
• Tin8 x 12

1. Aydar Sunievon eBayUpper Deck Series 2 #478on eBayCard guide →
2. Frederic Bruneton eBayUpper Deck Series 2 #489on eBayCard guide →
3. Matthew Schaeferon eBayUpper Deck Series 2 #451on eBayCard guide →
4. Michael Brandsegg-Nygardon eBayUpper Deck Series 2 #492on eBayCard guide →
5. Michael Misaon eBayUpper Deck Series 2 #487on eBayCard guide →
6. ZBZeev Buiumon eBayUpper Deck Series 2 #486on eBayCard guide →