Karman S-Ergo 305 Ultra Lightweight Ergonomic Wheelchair

Are you in the market for a long-term mobility solution that won't break the bank? Look no further than the award-winning S-Ergo 305 wheelchair! This ultra lightweight chair weighs in at just 29 lbs and can support up to 250 lbs, all while offering a range of adjustability options including seat heights of 18", 19", and 20" and flip-back, height-adjustable armrests.

But don't just take our word for it - the S-305 has been critically reviewed and acclaimed by the Wheelchair Institute as well. And with standard quick release wheels and a competitive price point compared to custom wheelchairs, it's no wonder this model made our Karman's Choice list.

Karman S-Ergo 305 Ultra Lightweight Ergonomic Wheelchair with Adjustable Seat Height

Don't let analysis paralysis hold you back - check out our in-depth review of the S-305 Ergonomic Wheelchair and discover why it's an exceptional choice for those with long-term mobility needs. Trust us, you won't be disappointed!

Karman S-Ergo 305 Video Walkthrough


  • Weighs only 29 lbs. (without footrest)
  • Globally Patented S-Shape Ergonomic Seating System
  • Flip Back Armrest with Height Adjustable Armpads
  • Swing In/Away Removable Footrest
  • Storage Pouch on Backrest
  • Anti Bacterial AEIGIS® Seat and Back cushion (machine washable)
  • Breathable Mesh Seat and Back Sling
  • Folding Backrest and Folding Seat for compact transporting
  • Seat Height Adjustable: 18″ , 19″ , 20″ 
  • 7″ x 1″ Polyurethane Front Casters
  • 24″ x 1 3/8″ Polyurethane Flat Free Rear Wheels w/Quick Release Axle
  • Frame Color: Pearl Silver & Rose Red
  • Seat Width: 16″ x 17″ or 18″ x 17″
  • Weight Capacity: 250 lbs.


HCPCS Code K0005 *
Seat Width 16 inch., 18 inch.
Seat Depth 17 inch.
Armrest Height 9-11 inch.
Seat Height 18, 19, 20 inch.
Back Height 17 inch.
Overall Height 38 inch.
Overall Open Width 24 inch., 26 inch.
Folded Width 12 inch.
Overall Length 43 inch.
Weight Without Riggings 29 lbs.
Weight Capacity 250 lbs.
Shipping Dimensions 34″ L x 31″ H x 12.5″ W

Due to our commitment to continuous improvements, Wheels & Chairs reserves the right to change specifications and design without notice. Further, not all features and options offered are compatible with all configurations of the wheelchair.


Wheels & Chairs can adjust the following on request for free:

  • Seat Size
  • Frame Color
  • Seat Height

Wheels & Chairs can add the following on request at an additional cost.

  • Clamp Style Seat Belt (+$23.00)
  • Auto Style Seat Belt (+$36.00)
  • 16″-18” Width Foldable Headrest with Assembly (+$154.00)
  • Anti Tippers – Pair (+$56.00)
  • 16” Width Leg Strap – Calf Support (+$11.00)
  • 18” Width Leg Strap – Calf Support (+$11.00)
  • 16” Width Backrest Extension (+$96.00)
  • 18” Width Backrest Extension (+$96.00)
  • Universal Carry Pouch – Size: Small (+$11.00)
  • Universal Carry Pouch – Size: Large (+$19.00)
  • Universal Cup Holder (+$19.95)
  • Tie Down Kit 15ft / 4.5m (+$39.99)
  • Spinergy LX 12 Spoke Performance Wheels (+$583.00)
  • Spinergy SPOX 18 Spoke Performance Wheels (+$512.00)
  • Spinergy WIRE 30 Spoke Performance Wheels (+$305.00)
  • Elevating Largest (+$120.00)
  • Seat Memory Foam 2" Cushion (+$219.00)
  • Foam Seat  Cushion (+$72.00)
  • Gel Seat Cushion (+$98.00)
  • Wide Memory Foam 2” Cushion (+$189.00)
  • Wide Back Foam Cushion (+$98.00)

If you'd like to make any of the following adjustments or additions, contact our sales team through text, call or email and we'd be happy to assist you.

Phone number: (757) 654-1727
Email: sales@wheelsandchairs.com


Why buy from Wheels & Chairs?

  • Price - Wheels & Chairs offers the lowest price possible as allowed by our manufacturers. You won't be able to find any of our items for less than what we offer on the market.
  • Service - Our knowledgeable customer service team has the BEST response times in the industry. If you send a message to live chat and don't hear a response in 5 minutes or less, you get a discount.
  • Free Shipping in the US - We ship to anywhere in the US for absolutely free (contiguous states only). It's on us.
  • Return Policy - We match the return policies of our manufacturers for all products giving you the best possible deal (usually free returns within 30 days plus a restocking free. See the full return policy in "Shipping | Warranty | Returns" tab above.


We offer free shipping on all products.

Estimated Shipping Time: 1-6 Business Days


In order to process your return as efficiently as possible, please follow the instructions below carefully. Failure to follow these instructions may result in a delay in processing your return or have the credit denied.

Non-Returnable Products

  • Products purchased more than thirty (30) days from ship date
  • Configured wheelchairs, special or custom products made to customer specifications or sold as non-returnable
  • Products returned in altered or damaged packaging, or in packaging other than original packaging
  • Package and/or product broken, breached, damaged or unsellable condition
  • Returns prohibited by state law
  • All seating components must be returned inside original sealed plastic bags
  • Issuance of an RMA number does not guarantee credit.  Credit issuance is dependent on confirmed receipt/review and acceptance of RMA product back in Wheels & Chairs inventory and is subject to the other terms of this policy

*Each state has individual Pharmacy laws, all returns are subject to approval of Wheels & Chairs.

Short Shipment and Freight Damage

Claims for shortage, errors in delivery or defects apparent on individual inspection must be made in writing to Wheels & Chairs within four (4) calendar days after receipt of shipment.  Buyer’s failure to give timely notice of the same shall constitute unqualified acceptance of such shipment.

Damages or Shortages

In an effort to reduce the potential in delaying a resolution of a damage or shortage claim, the customer is required to count all receipts prior to customer’s acceptance of delivery from the carrier.  Furthermore, after receipt of products, inspection to obvious damage to product, packaging and/or shortages, must be noted on the carrier’s freight bill or bill of lading (BOL) and be countersigned by the customer.  The damaged products must remain in the original carton in the event inspection is required by the transportation company.

The Customer must notify Wheels & Chairs of any damages in transit or any of the aforementioned possible situations within two (2) business days of receipt, or Wheels & Chairs shall have no obligations to process credit or arrange for the product replacement.  Contact a Wheels & Chairs Service representative at (757) 654-1727 or support@wheelsandchairs.com to report damages or shortages.

Products Shipped in Error by Wheels & Chairs

Customer must notify Wheels & Chairs of any shipping errors or disputes within two (2) business days of receipt.  Products shipped in error by Wheels & Chairs are returnable through RMA procedure, provided that products are received within thirty (30) days of receipt.

RMA (Returns Merchandise Authorization), Fee Schedule, & Procedure

Return authorization must be obtained in advance from Wheels & Chairs. No return of any kind will be accepted after fourteen (14) calendar days from the invoice date and shipped back within 30 days shipped freight prepaid. Goods accepted for credit upon return will be subject to a 15% handling/restocking charge and all transportation charges must be prepaid.

For orders being returned for exchange in color, size, etc. the restocking fee will be reduced to 10%. Any returns thereafter will be on a case-by-case basis depending on the product, and situation, and subject to a restocking fee ranging from 25-50%, plus a minimum of $25 processing.

Custom-made goods are not subject to return under any circumstances. In no case are goods to be returned without first obtaining an RMA (Returned Merchandise Authorization) number. Return authorization number must be marked on the outside of the box and ship back to Karman (supplier). All freight charges including the 1st way from Karman to the customers will not be credited or refunded.

Wheels & Chairs will credit any freight and/or handling fee on the original order paid by the customer on returns that are due to a Wheels & Chairs error, and if all items on the invoice are being returned.


The warranty is extended only to the original purchase and delivery of the product.  Warranty is not transferable.  Parts or materials which are subjected to normal wear and tear which must be replaced / repaired are the owner’s responsibility.  Damaged caused by user negligence, accidental damages intentional or not are not covered under Factory warranty policy.  Arm pads and upholsteries are not covered by our warranty policy. The warranty period for the consumer commences on the purchase date. Warranty is void on wheelchairs that have had the serial # tag removed and/or altered. Furthermore, products that have been subjected to negligence, abuse, improper storage, or handling, improper operation, any modifications, misuse are not covered under the warranty policy. All warranty repairs or replacements must have prior authorization from Wheels & Chairs with freight prepaid. Wheels&Chairs reserves the right to issue call tags for any warranty repairs, which is situation dependent. Should a field action or recall occur, Wheels & Chairs will identify the affected units and contact you with instructions for resolution. If you'd like to make a warranty claim, you can fill out this Contact Form or contact one of our agents at support@wheelsandchairs.com or call us at (757) 654-1727.

The full warranty of each Karman wheelchair product matches the warranty of our corresponding wheelchair supplier, in this case Karman Healthcare. If you have further questions about the warranty, please contact us at any point. We're happy to help.

Got questions? Read through our FAQ page listed in our Main Menu to see if it's answered there! If not, please contact us either through the chatbot found on the bottom right of the screen or via this form.

Customer Reviews

Based on 4 reviews
Katie W
I am super excited that it works and will allow me to ...

I bought this wheelchair in hopes that it was small and light enough that I could take off the wheels and pull it over my body into a 4 door sedan-style car all by myself. I just received it today and was able to do that!! I am super excited that it works and will allow me to be self-sufficient :-)

I've had the wheelchair about a week now. It is way lighter than the one they sent me home with from the hospital. It is also smaller and easier to maneuver. It's just much easier than the one they sent me. I feel more confident in my movements, and I'm more wiling to try new things because of this. Like today I got myself out over a step into the yard. I couldn't do this with my old wheelchair. It was heavier and bulkier.

Definitely glad I purchased this model.

Susan Meals
Light weight and Backrest Folds Down

My husband recently bought the Karman S-Ergo 305 wheelchair for me after much research. He also wanted to make sure that this wheelchair would be lighter than the previous three wheelchairs I've had over the last 21 years. The Ergo 305 is lighter by 7-10 lbs over the others.
It's much lighter for my husband to lift into our SUV. The backrest folds down for push handle clearance on our SUV rear cargo opening so he doesn't have to collapse the Ergo 305 multiple times and lay it on it's side when we are out and about. Another sweet feature is the unique ergonomic S-shaped seat and is very comfortable.
There are many other features with this model but with what I have seen and experienced thus far since its delivery two days ago; I'm very pleased with the Karman S-Ergo 305 and would recommend it!

stephen Tedeschi
After comparing the various Karman Options I felt the 305 was the best choice

THE BEST BANG fFOR THE MONEY. Lots of options and still extremely light. Karman has lots of great wheelchairs to choose from but for me the 305 seems to be the best choice after weighing all the options.
Weight was key and I was leaning towards the [****]

The 105 didn't have swing away foot rests.
The 115 did, but armrests were fixed. Don't underestimate the importance of removing or swinging back the armrests to get under a table.
The 125 had everything but was more expensive, didn't have quick release wheels AND wasn't available for two day delivery.
If a red S-305 was available with two day delivery I would have gone that path, but only the silver and pearl was and it still looks nice.
Standard wheels are better than expected. They have more give than the standard hard interior wheels but I still might upgrade for a more outdoor tire, and thanks to the quick release I will have that option.

William Westmoreland
The best! Modular and configurable, narrow enough for standard doors

Simply the best. I have seen and used many over the years, this raises the bar for ease of use as well as adjustable with ease. If you need a wheelchair buy this one, it is worth the money