Materials:

1. Leather Type: Look for high-quality leather such as full-grain, top-grain, or premium leather.
2. Leather Thickness: A thicker leather (around 1.5-2.5 mm) provides better protection and durability.

Design and Style:

1. Fit: Choose a vest with an adjustable fit to ensure a comfortable and secure wear.
2. Length: Consider a vest with a longer length for added protection and coverage.
3. Collar Style: Options include snap-button, zip-up, or Velcro closure.
4. Pocket Configuration: Look for vests with multiple pockets for storage and organization.

Safety Features:

1. Armor: Consider vests with built-in armor such as CE-certified protectors or foam padding.
2. Reflective Materials: Some vests feature reflective materials for increased visibility.

Hardware and Accents:

1. Zippers and Snaps: Look for high-quality zippers and snaps that are durable and easy to use.
2. Buckles and Straps: Adjustable buckles and straps provide a secure fit.

Branding and Certification:

1. Manufacturer: Look for reputable manufacturers with experience in producing high-quality leather vests.
2. Certifications: Check for certifications such as CE, ISO, or ASTM, which ensure the vest meets safety standards.

Additional Features:

1. Water Resistance: Some vests feature water-resistant treatments or membranes.
2. Breathability: Look for vests with breathable materials or mesh panels for ventilation.
3. Customization: Some manufacturers offer customization options such as embroidery or patches.