Specified Play Equipment Company was founded by David Yosso. The type of manufacturer's SPEC chooses to work with, provide self regulated play experiences for all ages and abilities to exercise risk, failure and mastery. SPEC is the Exclusive Partner and Distributor of BerlinerBCI Burke, Lappset, Free Play and mmcité. SPEC hand selects manufacturers that share his philosophy on play, landscape and sport/fitness. In addition, SPEC has designed and engineered custom native Black Locust play pieces and Natural PlayDecks for a truly sustainable, eco friendly, nature play experiences. SPEC provides turnkey solutions to help manage your project from schematic design all the way through construction. 


David Yosso     



Yosso holds a Bachelor's Degree in Recreation Management along with a Masters Degree in Park Management from California Polytechnic State University, San Luis Obispo.  For over 10 years, Yosso managed more than 300 park and playground projects throughout California.  Yosso is passionate about parks and play area design.  He believes that play should be spontaneously selected, individually directed, and inherently educational.  As a former NCAA Division I student athlete he holds a record for the most yellow cards in a single season.  He now coaches his son, Dylan in the hopes that he does not break Yosso's NCAA Division I record.  BTW, Dylan frankly would rather build legos and play piano at age 7.  


Daya Sanchez   


      Project Manager

Sánchez grew up in San José and went on to attend UC Berkeley where she majored in Political Economies of Industrialized Societies and played outside center for the rugby team. Daya brings over 15 years of experience in education and community work to SPEC. She has served in AmeriCorps, taught bilingual fifth grade, migrant education and preschool and worked as a volunteer firefighter and EMT. Daya coaches youth soccer, serves on the boards of two nonprofits and is the author of the nonfiction children's book This is Gymnastics. Daya also has her own team of professional playground testers—her sons Sebastian (shortstop and freeskier) and Dominic (gymnast and ballet dancer), her daughter Adrienne (futbolista, taekwondo blue belt and giant slalom racer), and her husband Stephen (educator and CrossFit rock star). When they're not out competing, Daya and her family love to learn about the world around them through books, outdoor exploration and play.


"It's been a pleasure working with David Yosso. His responsiveness and attention to detail continues to out-perform all supposed competitors.  Keep up the good work!"

- John Gianoli
City of Millbrae Parks Manager



"Thank you for your work and efforts to provide a terrific resource for designers that helps us have more thoughtful and creative approaches to play on our projects.  Your focus resonates with my own ideals and I feel incredibly fortunate to get to work together with you on projects in our own communities and neighborhoods."




"Always a pleasure to work with the SPEC team"

- Chad Kennedy, P.L.A., CPSI, LEED® AP BD+C