Mount Si High School
Spirit Wear
Show your pride on and off the field. Official spirit wear for students, families, alumni and fans.
Official Designs
School approved
Quality You Can Trust
Premium apparel
Easy Returns
Shop All Apparel
Official Gear · Every Style
Premium T-Shirt
Shown with NOISE CREW
Womens Premium Jersey Tee
Shown with STRONG
Youth Tee
Shown with PRIDE
Hooded Sweatshirt
Shown with trumpet
Crewneck Sweatshirt
Shown with let's go
Tank Top
Shown with foam finger
Women's Racerback Tank
Shown with Spirit Splat
Sticker
Shown with I Heart
Hat
Shown with property of
Adidas Lightweight Quarter-Zip Pullover
Shown with I survived honors convocation
Under Armour Quarter Zip Pullover
Shown with We Play Loud
Adidas Performance Sport Shirt
Shown with Straight Outta Rehersal
Under Armour Athletic T-Shirt
Shown with Band - Louder than the football team
Shop By Sport
Shop By Collection
50%
Goes Back To
Mount Si High School
On every item. All year long.
The Giveback Program
Every Order Supports Mount Si High School
This is an official Mount Si High School spirit store. Shop like you normally would and the giveback happens automatically.
- 50% of every sale goes back to Mount Si High School — on every item, all year long.
Why Shop Spirit Wear On Sunfrog?
School Approved
Official designs that meet school guidelines
Premium Quality
Comfortable, durable apparel that lasts
Support Our School
50% of every purchase goes back to support our school
Fast Shipping
Quick production & reliable delivery
YOUR NAME
23
YOUR TEXT
Ready To Gear Up?
Find your perfect fit and show your pride today.