FlexLock phone stability
The liner phone pocket is positioned higher on the thigh to keep a large smartphone closer to the body during running, lifting and everyday movement.

TRAILSHIFT™ FLEXLOCK
Your phone stays close. Your stride stays free.
The TRAILSHIFT™ FLEXLOCK 7" 2-in-1 All-Day Training Short is designed for men who move between training, travel and everyday life without changing shorts. A lightweight matte stretch shell maintains a clean everyday appearance, while the supportive inner liner provides secure coverage during movement.
Fit Guide
Check waist, hip, thigh, inseam and outseam before choosing your size.
The liner phone pocket is positioned higher on the thigh to keep a large smartphone closer to the body during running, lifting and everyday movement.
A gusseted crotch, stretch construction and side vents help support deep squats, lunges, stair climbs and longer strides.
Matte fabric, tonal colors and low-profile branding create a cleaner look that moves naturally from the gym to coffee, errands and weekend travel.
| Outer inseam | 7 inches |
|---|---|
| Fit | Regular athletic fit |
| Construction | 2-in-1 outer short and supportive integrated liner |
| Outer shell | Target specification: 88% recycled polyester, 12% elastane |
| Inner liner | Target specification: 78% recycled nylon, 22% elastane |
| Pockets | Two hand pockets, rear zip pocket, liner phone pocket and internal key pocket |
| Waist | Wide elastic waistband with internal drawcord |
| Available sizes | XS–3XL |
Choose your normal US size for a balanced athletic fit. Size up for a more relaxed fit through the leg opening.
Machine wash cold with like colors. Tumble dry low. Do not bleach. Do not iron the decoration.
Use the detailed size chart to compare waist, hip, thigh circumference, inseam and outseam measurements. If you are between sizes, choose the larger size for a more relaxed athletic fit.