You have successfully logged out.

Hello !

The right choice of stoma bag

Do you fight with stoma leakage and skin problems?

If this is the case, you might have experienced excretion settling under the wafer. Or maybe the skin around your stoma constantly feels painful and appears red or irritated. All this could impact the health of your skin, your mobility, and your overall well-being. 

Man talking to nurse, with hands on right side of abdomen
  • 0%

    of people with a stoma may experience leakage during their lifetime.[1]

  • Up to


    of the ostomy population can be affected by peristomal skin problems.[2]

Why do problems with your bag system and leakage occur?

Numerous contributing factors may affect the seal of your stoma system. To name just a few:

  • a flush stoma which is a stoma at the level of the abdominal skin[4]
  • a retracted stoma, which sits below the level of the abdominal skin[5,6]
  • uneven skin around the stoma with skin folds, creases, wrinkles[7,8,9]
  • flabby abdominal skin[7]

In such cases, a conventional wafer might simply not fit perfectly or close well around your stoma.

Have you already tried a convex stoma bag system?

In a nutshell: Convex wafers are designed to[1,4,5,9,10]

  • provide a good seal around the stoma
  • help prevent leakage
  • help your peristomal skin to stay healthy
  • simplify stoma management for you

This can work for you, regardless of your size, weight, or whether you are a newbie or a veteran at managing your stoma.

The balance between the right amount of pressure and softness can help seal your stoma more securely to the surrounding skin.

Discovering the soft convex product Flexima® Active O’ convex could start a new chapter in your life with ostomy.

O’ what a flexibility
Elderly man with hat and blue shirt does a kick
O‘ what a change
Man in dynamic movement with arms at horizontal height of shoulders

Select your product version

Flexima® Active O' convex Roll'up bag

Flexima Active O' convex High Flow stoma bag and distal bag Flow Collector

Flexima® Active O' convex  closed bag

Flexima® Active O' convex urostomy bag with distal bag Uribag®
Ally Paste, Ally Powder, Ally Rings, Ally Wafer extension displayed on a surface in a private bath room.

Your stoma nurse recommends to use stoma accessories?

The Ally® accessory range is designed to enable an even more personalized care of the individual stoma and can can help to protect and care for the surrounding skin. 

chevron_rightLearn more about tips to help avoid peristomal skin irritations
Overview of the convex stoma bag product range


  1. Evans M, White P. Selecting convexity to improve and maintain peristomal skin integrity. Br J Nurs. 2020 Sep 10;29(16):S8-S14. doi: 10.12968/bjon.2020.29.16.S8. PMID: 32901550.
  2. Andersen NK, Trøjgaard P, Herschend NO, Størling ZM. Automated Assessment of Peristomal Skin Discoloration and Leakage Area Using Artificial Intelligence. Front Artif Intell. 2020 Sep 10;3:72. doi: 10.3389/frai.2020.00072. PMID: 33733189; PMCID: PMC7861335.
  3. Martins L, Andersen BD, Colwell J, Down G, Forest-Lalande L, Novakova S, Probert R, Hedegaard CJ, Hansen AS. Challenges faced by people with a stoma: peristomal body profile risk factors and leakage. Br J Nurs. 2022 Apr 7;31(7):376-385. doi: 10.12968/bjon.2022.31.7.376. PMID: 35404660.
  4. Cronin E, A guide to the appropriate use of convex stoma care products. Gastrointestinal Nursing 2013; Vol. 6, No. 2. DOI: 10.12968/gasn.2008.6.2.28803. ISSN: 14795248.
  5. Hoeflok J, Salvadalena G, Pridham S, Droste W, McNichol L, Gray M. Use of Convexity in Ostomy Care: Results of an International Consensus Meeting. J Wound Ostomy Continence Nurs. 2017 Jan/Feb;44(1):55-62. doi: 10.1097/WON.0000000000000291. PMID: 28002174; PMCID: PMC5266410.
  6. Hoeflok J, Kittscha J, Purnell P. Use of convexity in pouching: a comprehensive review. J Wound Ostomy Continence Nurs. 2013 Sep-Oct;40(5):506-12. doi: 10.1097/WON.0b013e3182a219b7. PMID: 24448619.
  7. Turnbull GB, The convexity controversy. Ostomy Wound Manage. 2003 Jan;49(1):16-7. PMID: 12532029.
  8. Young MJ, Convexity in the management of problem stomas. Ostomy Wound Manage. 1992 May;38(4):53-4, 56, 59-60. PMID: 1590908. Abstract.
  9. Perrin A. Convex stoma appliances: an audit of stoma care nurses. Br J Nurs. 2016 Dec 8;25(22):S10-S15. doi: 10.12968/bjon.2016.25.22.S10. PMID: 27935354.
  10. Data on file: Lukas Schaumann – Report on Flexima®/Softima® Key post-marketing user evaluation. 2005-03-23.
  11. Rat P, Robert N, Fernandes I, Edmond D, Mauvais F. Evaluation of a one-piece soft convex ostomy appliance: a prospective, multicentre, open-label pilot study. Br J Nurs. 2018 Sep 6;27(16):S20-S28. doi: 10.12968/bjon.2018.27.16.S20. PMID: 30187789.