Fit
The Speed Up is cut closer to the body than the Hotty Hot, with a narrower leg opening that creates a more athletic, streamlined silhouette. The high-rise waistband sits securely with a continuous drawcord, and the overall construction feels tighter and more purpose-built for running performance.
The liner in the Speed Up runs noticeably tight — a common complaint across reviews. If you’re between sizes or have found lululemon liners snug in the past, sizing up is worth considering. The 4-inch inseam provides moderate coverage, with the 2.5-inch option available for those who prefer a shorter running short.
Fabric & Feel
Same Swift Ultra fabric as the Hotty Hot — 100% recycled polyester that’s light, crisp, and fast-drying. The woven construction resists clinging to sweaty skin and moves freely during high-cadence running. The difference from the Hotty Hot is entirely in the cut and construction, not the material.
The Speed Up adds reflective details at the back hem and side seams, which provide visibility for early-morning or evening runs — a practical touch the Hotty Hot lacks.
Durability
Swift Ultra holds up well to frequent running and regular washing. The Speed Up maintains its structure, color, and elastic integrity over months of use. The tighter construction means less fabric movement and friction, which can result in slightly longer lifespan than looser shorts.
Value
At $68, the Speed Up matches the Hotty Hot’s price point. The choice between them is purely about fit preference — relaxed and airy (Hotty Hot) versus fitted and streamlined (Speed Up). Both deliver the same fabric and construction quality at the same price.
Who It’s For
Runners who prefer a fitted, performance-oriented look over a relaxed casual short. If you race or train seriously and want a short that looks fast and stays out of your way, the Speed Up delivers. For casual running and everyday wear, the Hotty Hot’s relaxed cut is more comfortable.
