Co-developed with ultramarathon & Spartan champion Tomomi Bitoh - built for runners, endurance athletes, and busy women who want simple, reliable nutrition.
Women’s champion at THE TRACK Australia 520 km (2025); Marathon des Sables 2025 women’s 3rd; World Marathon Challenge 2025 women’s runner-up.
Protein:15 g whey
Collagen peptides:3,000 mg
Vitamin C:1,500 mg*
Soluble dietary fiber:2,500 mg
Plus:Calcium, Magnesium, Iron + 11 vitamins
Flavor:Smooth Yogurt (not too sweet)
Sweetener:Stevia (no artificial sweeteners or preservatives)
Mixability: Dissolves fast in water or smoothies
*General nutrition info; always follow your label.
Why athletes choose it
Athlete-developed: co-created with Tomomi Bitō for real-world training blocks and race weeks. tomomi-challenger.com
Performance + beauty routine in one:whey 15g to support post-training protein needs, collagen 3,000mg, and vitamin C—easy to make a habit.
Endurance-friendly: light yogurt flavor, smooth, not overly sweet.
Clean label: stevia-sweetened, no artificial sweeteners or preservatives; check the full ingredient list on pack.
(This page shares general nutrition info. It does not diagnose, treat, or prevent disease. Individual needs vary.)
Who it’s for
Women who want a simple, daily protein + collagen habit
Runners, marathon/ultra-marathon, Spartan and other endurance athletes
Anyone who wants clean, great-mixing whey with a not-too-sweet yogurt taste
Busy days when you still want to feel your best
How to use
Pre-run / pre-gym: light shake 30–60 min before
Post-workout: quick protein top-up
Daily: blend with milk/alt-milk, pour over oats, or shake with water
Product info
Flavor: Yogurt
Net contents:500 g
Serving size:~25 g
Price:¥3,950 (tax-included)
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