The lateral side cuts allow for easy access and removal, even while wearing gloves.

May also accommodate flashlight with similar dimensions: 

Nextorch TA30C

• Length: 136 mm (5.35 inches)
• Head Diameter: 30 mm (1.18 inches)
• Body Diameter: 23 mm (0.91 inches)

Streamlight Polytac X

• Length: 139 mm (5.46 inches)
• Head Diameter: 31.8 mm (1.25 inches)
• Body Diameter: 25.4 mm (1.00 inch)