When workout, is there some article of clothing that should be worn under these? Or are these made to be the bottom layer?

I would consider these to be a base layer with shorts worn over them.

Do these shrink after washing or drying?

Mine didn’t. Although I used cool settings on both wash and dry. Almost wish they had, not the most “compressive” brand I’ve owned.

I have 52inch waist will 4xl fit me?

Based on the incremental changes in waist size, I believe 4xl would fit someone between 44 to 48

My son is a 31 inch waist, what size should i choose?

They run true to size. I am a 34 and used the Medium and they fit perfect. Here is what they recommend. Small Fit Waist 30-33.5" Hip 36-38" Inseam 6.5" Medium Fit Waist 32-35.5" Hip 38.5-41" Inseam 6.7"

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Runhit 3 Pack Compression Shorts Men Sports Underwear Base Layer Spandex Cycling Shorts Mens for Running Workout Gym Rugby Yoga Boxing

Runhit 3 Pack Compression Shorts Men Sports Underwear Base Layer Spandex Cycling Shorts Mens for Running Workout Gym Rugby Yoga Boxing

Product ID: 438909266

💨Moisture-wicking fabric keeps you dry

🧵Durable flatlock stitching prevents chafing

🩸Boosts blood flow for muscle recovery

S$36

Duties & taxes included

In stock

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Description

🔥 Elevate your grind with Runhit: Compression that moves as fast as you do!

ALL SEASON COMFORT - 88% polyester and 12% spandex blend wicks moisture and regulates temperature year-round.
CHAFE FREE DURABILITY - Advanced four-needle six-line flatlock stitching ensures long-lasting wear without irritation.
VERSATILE ATHLETIC DESIGN - Perfect for running, cycling, yoga, rugby, boxing, and weight training—your all-in-one base layer.
ADAPTIVE FIT FLEXIBILITY - Elastic waistband and thigh bands snap back comfortably for unrestricted movement.
PERFORMANCE DRIVEN COMPRESSION - Supports glutes, quads & hamstrings to enhance circulation and alignment for peak workouts.

Runhit 3 Pack Compression Shorts combine high-performance spandex-polyester fabric with expert flatlock stitching and targeted muscle support to boost blood flow and reduce chafing. Designed for multi-sport use, these shorts feature a secure elastic waistband and moisture-wicking technology to keep you dry and comfortable during intense workouts or casual wear.

Specifications

ASIN	B07RLQZKZB
ASIN	B07S216KNP
Age Range Description	Adult
Apparel Closure Orientation	Front
Best Sellers Rank	1,290 in Fashion ( See Top 100 in Fashion ) 3 in Men's Compression Base Layers Shorts
Brand Name	Runhit
Closure Type	Compression Spandex Shorts Men
Colour	3 Pack:black Grey
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (19,695)
Customer reviews	4.4 4.4 out of 5 stars (19,695)
Date First Available	6 May 2019
Department	Men's
Fabric Type	88% Polyester, 12% Elastane
Fitting type	Fitted
Front Pleat Type	flat front
Import Designation	Imported
Item Length	Short Length
Item Type Name	Shorts
Jeans length (inches)	6.7 Inches
Jeans width (inches)	70 Centimeters
Manufacturer	Runhit
Manufacturer	Runhit
Manufacturer Part Number	MMUS183183_008_B_M
Manufacturer reference	MMUS183183
Material Type	88% polyester,12% spandex
Model Number	mens compression shorts
Occasion Type	Athletic Shorts, Compression Shorts, Running Shorts, Spandex Short Men, Workout Shorts
Pattern	Solid
Pocket Description	Utility Pocket
Product Care Instructions	Machine Wash
Product Dimensions	30.99 x 25.5 x 1.02 cm; 280 g
Rise Style	Low Rise
Sport Type	Running
Style Name	Modern
Target Audience	Men
UPC	797550184112
Unit Count	1.0 count
character	sports

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