The calendar challenger is back for 2018 with 365 brand new puzzles, allowing you to challenge yourself and get your brain working every day of the year. Developed by Mensa
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Ali H.
Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.
1 day ago
Neha S.
Excellent communication throughout the order process. Product is perfect.
