Will this fit a 6’7” 270lbs man?

My husband is a large man and it worked for him. He is 6'5" and 340 pounds. He said he had plenty of room in the sleeping bag.

Who is the seller? Also, does this unzip at the foot area for ventilation?

I'm the seller,Yes,you can unzip at the foot area for ventilation。

How do determine left or right zip? While your in it or looking at it from outside the bag?

I'm sorry that I didn't explain left or right zip clearly. Left Zip：When you lie in sleeping bag to rest, the zipper is beside your left arm; Right Zip：When you lie in sleeping bag to rest, the zipper is beside your right arm; And you can see the letter L or R at the bottom of the storage bag. L represents the Left Zip,and R represents the Right Zip.

How do I fully open this to be a mat. I got one with one zipper at the bottom but there are two zippers at the side going in opposite directions.

you can open this sleeping bag to be a mat,simply unzip the both bottom and side zip. How to open the side zipper? it is a two-way zipper, just move the two zipper heads together to the bottom of the zipper,must be the bottom and align two zipper heads,then you can unzip it.I hope my answer can help you. It is worth mentioning that side zipper can be pulled in two way directions to facilitate ventilation.

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Description

❄️ Sleep Warm, Sleep Large, Sleep Like a Pro!

ROOMY XXL DIMENSIONS - Generous 90" length and 39" width perfect for big, tall, or side sleepers craving space.
DURABLE WEATHER RESISTANT - Tear-resistant 210T polyester shell keeps moisture out while ensuring long-lasting use.
VERSATILE DOUBLE BAG OPTION - Zip two bags together for a spacious double or fully open as a comfy sleeping mat.
EFFORTLESS CARE PORTABILITY - Machine washable flannel lining and tight compression sack for easy transport and maintenance.
ULTIMATE COLD WEATHER DEFENSE - Stay cozy down to 0°F with premium cotton insulation and draft-proof design.

The HiZYNICE Zero Degree Sleeping Bag is a winter-ready, extra-large sleeping solution designed for adults who demand warmth, space, and durability. Featuring a 0°F extreme temperature rating, a roomy 90" x 39" size, and a waterproof, tear-resistant polyester shell, it’s perfect for cold weather camping. Its versatile design allows zipping two bags together or opening flat as a mat, while the cotton flannel lining ensures comfort. Machine washable and easy to compress, this sleeping bag blends professional-grade performance with user-friendly care.

Specifications

Age Range	Adult
Color	Black
Size	90" x 39" Left Zip
Height	3.5 inches
Length	90 inches
Weight	7 Pounds
Width	39 inches
Shape	Rectangular
Material Type	Flannel
Maximum Height Recommendation	79 Inches
Number of Items	1
Outer Material	Polyester
Season	Winter
Features	Anti-tearing & Waterproof
Sport	Camping and Hiking
Included Components	Big and Tall Sleeping Bag, Compressed Sack
Batteries Included?	No
Brand	HiZYNICE
fill material type	Cotton
Department	unisex-adult
Manufacturer	HiZYNICE
Item model number	2021CSB9040BL
Product Dimensions	228.6 x 99.06 x 8.89 cm; 3.18 kg
ASIN	B098279B6J

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